What are the main energy products of respiration? |
ATP |
In what kind of organisms does the process of respiration occur? |
All organisms, plants, animals, bacteria and protozoa. |
What are the three parts of respiration? |
Glycolysis->Transition->Krebs |
What is the beginning product of respiration? |
Glucose |
What is the end product of glycolysis? |
Pyruvic acid or Pyruvate C3H6O3 |
What is the end product of anaerobic respiration? |
Lactic Acid |
What is the end product of fermentation? |
Carbon Dioxide and Ethyl alcohol (CO2, C2H5OH) |
Which is more efficient? Aerobic or anaerobic respiration? |
Aerobic Respiration yields 38 ATP’s, anaerobic yields 2 ATP |
How many molecules of ATP are generated in each of the three parts of respiration? |
Glycolysis-8 ATP’s Transition-6 ATP’s Krebs -24 ATP’s |
What part of respiration occurs in the cytoplasm what part occurs in the mitochondria? |
Glycolysis occurs in the cytoplasm, transition starts in the cytoplasm and ends in the mitochondrion. Krebs is completely in the mitochondrion. |
What happens to 60% of the energy released in respiration but not trapped in ATP? |
It is released as heat. |
How many molecules of ATP are generated in each of the three parts of respiration? |
Glycolysis-8 ATP’s Transition- 6 ATP’s Krebs —-24 ATP’s |
The release of oxygen in photosynthesis is derived from what input material? |
Oxygen comes from the water molecule |
How many molecules of NADP are needed to supply hydrogens to the Calvin cycle |
Twelve (12) molecules of NADP are needed to supply the twelve hydrogens to the Calvin cycle |
How many water molecules are used up to manufacture a single glucose molecule? |
Six water molecules go into the glucose molecule another six are used to manufacture ATP, in all twelve molecules go in and six come out. |
How many ATPs’ are used in the Calvin cycle to manufacture a single glucose |
Eighteen (18) molecules of ATP are used up. |
What is the function of coenzyme A |
Coenzyme A is a non protein enzyme and its job is to take the two carbon fragment, Acetyl, into the mitochondrion |
How many ATPs are produced per cycle of the Krebs? |
Twelve ATPs are produced per cycle (per Acetyl) and two (2 Acetyls) cycles create twenty-four ATPs from each glucose |
How many carbons in Acetyl, Pyruvic acid, Lactic acid and Carbon Dioxide |
Acetyl – 2 carbons Pyruvic acid – 3 carbons Lactic acid – 3 carbons Carbon Dioxide – 1 carbon |
For each pair of protons and electrons how many ATPs are produced |
Three ATPs are produced |
What is the meaning of the statement "correlation does not imply causation"? A. Just because two variables vary in a similar pattern does not mean that changing one variable causes a change in the other. |
A. Just because two variables vary in a similar pattern does not mean that changing one variable causes a change in the other. |
Which of the following issues would be least helped by application of the scientific method? A. developing more effective high school curricula |
D. formulating public policy on euthanasia |
A relationship between phenomena that has been established based on large amounts of observational and experimental data is referred to as: A. a theory. |
A. a theory. |
Anecdotal evidence: A. is a more efficient method for understanding the world than the scientific method. |
E. can seem to reveal links between two phenomena, but the links may not actually exist. |
Statistical methods make it possible to: A. prove any hypothesis is true. |
B. determine how likely it is that certain results have occurred by chance. |
An independent variable: A. can cause a change in a dependent variable. |
A. can cause a change in a dependent variable. |
You hear the males of a particular bird species calling in their natural environment and question why they call. You design an experiment to try to answer your question. You cage one male bird and record his calling rate in response to four treatments, varying the number of conspecific (of the same species) males and the number of conspecific females that the male subject can see. The treatments are: no conspecific birds; 10 conspecific males; 10 conspecific females; 5 conspecific males and 5 conspecific females. Your results are: the rate at which the male subject calls is the same across all four treatments. Which of the following is a null hypothesis that your experimental design could reject? A. Males of the species do not call. |
C.Males of the species call at a rate that is independent of the sex composition of the audience. |
If a researcher collects data by using the same experimental setup as in another study, but using different research subjects, the process is considered: A. an uncontrolled experiment. |
D. replication. |
A _____________ is a pill that looks identical to a pill that contains the active ingredient in a scientific trial, but contains no active ingredient itself. A. tablet |
C. placebo |
Some have claimed that the herb echinacea reduces the likelihood of catching the common cold. In many hundreds of studies, this claim has been refuted. Assuming these studies were properly conducted, which of the following is a scientifically responsible claim that an echinacea advocate could make in support of further research on this subject. A. The effective dosage of echinacea was outside the range of the dosages given in the scientific studies. |
E. Only a) and c) are scientifically responsible claims that an echinacea advocate could make in support of further research on this subject. |
Which of the following is the BEST way to state the relationship between "data" and "results"? A. "Data" are the facts you collect from your experiment, while "results" are your interpretation of what the data mean. |
A. "Data" are the facts you collect from your experiment, while "results" are your interpretation of what the data mean. |
Scientific theories do not represent speculations or guesses about the natural world. Rather they are hypotheses—proposed explanations for natural phenomena—that have been: A. found to be statistically significant. |
E. so strongly and persuasively supported by empirical observation that the scientific community views them as unlikely to be altered by new evidence. |
In controlled experiments: A. one variable is manipulated while others are held constant. |
A. one variable is manipulated while others are held constant. |
In a randomized, controlled, double-blind study: A. experimental subjects are blind-folded when given the experimental treatment. |
D. neither the experimenter nor the subject know whether the subject is in a control group or an experimental group. |
An experimental condition applied to research subjects is called a: A. control. |
B. treatment. |
Which of the following is the BEST description of a control group in an experiment? A. The control group is identical to each test group except for one variable. |
A. The control group is identical to each test group except for one variable. |
In a scientific study, the dependent variable is: A. a measurable entity whose value can be changed and set at the start of an experiment. |
C. a measurable entity whose value always fluctuates up and down, closely following changes in another variable. |
In a line graph, the value of the independent variable is: A. represented as long lines extending from the right side of the graph. |
B. represented on the x-axis. |
Visual displays, such as graphs, are used in scientific presentations because: A. they obscure embarrassing errors and mistakes in the data. |
E. Both c) and d) are correct. |
If a report states, "the female subjects in the study are 5 feet 6 inches ± 3 inches," this indicates that: A. 90% of the women are between 5 feet 3 inches and 5 feet 9 inches. |
D. two thirds of the women are between 5 feet 3 inches and 5 feet 9 inches. |
The set of analytical and mathematical tools designed to help researchers gain understanding from the data they gather is called: A. experimentation. |
B. statistics. |
In a series of studies, researchers found a statistically significant positive correlation between the number of fire fighters present at a fire and the amount of damage that the fire does. Which of the following is the BEST conclusion to be drawn from these studies? A. Statistical data must be put in its proper context to be understood. |
A. Statistical data must be put in its proper context to be understood. |
The atomic number of carbon is 6. Its nucleus must contain: A. 6 neutrons and 6 protons. |
A. 6 neutrons and 6 protons. |
The second orbital shell of an atom can hold ___ electrons. A. 2 |
E. 8 |
A covalent bond is formed when: A. two non-polar molecules associate with each other in a polar environment. |
D. two atoms share electrons. |
An element: A. is a substance that cannot be broken down chemically into any other substance. |
A. is a substance that cannot be broken down chemically into any other substance. |
The nucleus of an atom is usually made up of: A. protons, neutrons, and proteins that hold them together. |
E. protons, which a positive charge, and neutrons, which have no electrical charge. |
Relative to protons: A. electrons have approximately the same mass. |
D. electrons have significantly less mass. |
The four most abundant elements in living organisms are: A. sodium, nitrogen, carbon, and silicon. |
E. hydrogen, nitrogen, oxygen, and carbon. |
All matter on earth, both living and non-living, is made up of: A. carbohydrates. |
B. atoms. |
Some atoms of an element contain more neutrons or fewer neutrons than the most commonly found "version" of the atoms for that element. These "alternate versions" of the standard atom are called: A. radioactive elements. |
D. isotopes. |
Which of the following elements have four electrons in their outer shells? A. carbon and silicon |
A. carbon and silicon |
An atom can be changed into an ion by adding or removing: A. a neutron. |
C. an electron. |
Helium is not a reactive molecule because: A. its first-level shell is full with two protons. |
D. its first-level shell is full with two electrons. |
Which of the following molecules is NOT formed by covalent bonding? A. NaCl |
A. NaCl |
One important difference between covalent and ionic bonds is that: A. in covalent bonds two atoms share electrons while in ionic bonds two atoms of opposite charge are attracted to each other. |
A. in covalent bonds two atoms share electrons while in ionic bonds two atoms of opposite charge are attracted to each other. |
Water molecules form which type of bond with other water molecules? A. disulfide bridges |
C. hydrogen bonds |
The tendency of molecules to stick together, called cohesion, is stronger in water than in other liquids because: A. the polarity of water allows an oxygen atom from one water molecule to form a hydrogen bond with the oxygen atom of another water molecule. |
B. the polarity of water allows a hydrogen atom from one water molecule to form a hydrogen bond with the oxygen atom of another water molecule. |
The most abundant molecule in the cell is: A. cellulose. |
C. water. |
Why do coastal areas have milder, less variable climates than inland areas? A. Because water is a good solvent, it is able to dissolve the photons in light, reducing their ability to heat or cool the land. |
D. Large bodies of water, especially oceans, can absorb huge amounts of heat from the sun during warm times of the year, reducing temperature increases on the land. Similarly, during cold times of year the ocean slowly cools, giving off heat that reduces the temperature drop on shore. |
Which of the following is NOT a property of water? A. It is less dense when frozen than when it’s a liquid. |
B. It is a good solvent because both polar and nonpolar molecules dissolve in it. |
Which of the following statements BEST explains the observation that there are more autism cases now than in the past? A. There are more parents who neglect their children, which is a cause of autism, now than in the past. |
D. Doctors are more aware of the condition and have better techniques for diagnosing and reporting it. |
All of the following are branches of biology EXCEPT: A. ecology. |
C. geology. |
Which of the following areas is NOT heavily influenced by biology? A. environmental issues |
E. Biology heavily influences ALL of these areas. |
Which of the following is NOT of central importance to the study of biology? A. evolution |
D. the technical application of research findings |
Carbohydrates: A. act as a relatively quickly available source of fuel. |
D. are a good source of sustained energy when they come in the form of polysaccharides. |
Which of the following are all monosaccharides? A. glucose, fructose, and galactose |
A. glucose, fructose, and galactose |
Glucose that circulates in your blood has one of three fates: it is used to fuel cellular activities, it can be converted into fat, or it can _______. A. be stored temporarily as glycogen |
A. be stored temporarily as glycogen |
Glycogen belongs in the class of molecules known as: A. amino acids. |
D. polysaccharides. |
Sucrose (table sugar) and lactose (the sugar found in milk) are examples of: A. simple sugars. |
C. disaccharides. |
All lipids are: A. polymers of fatty acids. |
B. not soluble in water. |
An unsaturated fatty acid is one in which: A. carbon-carbon double bonds are present in the hydrocarbon chain. |
A. carbon-carbon double bonds are present in the hydrocarbon chain. |
Which statement about phospholipids is FALSE? A. They are hydrophilic at one end. |
E. Because their phosphate groups repel each other, they are used as organisms’ chief form of short-term energy. |
Which of the following is a common role that sterols play in the human body? A. They are used as energy storage molecules. |
E. None of the above is true about sterols. |
All of the following are roles played by protein in the body EXCEPT: A. structural support. |
E. transmission of electrical impulses. |
All of the following are components of a single amino acid EXCEPT: A. an alpha carbon. |
E. All of the above are components of a single amino acid. |
In dietary terms, a "complete" protein is one that: A. contains all 20 amino acids. |
B. contains all of the essential amino acids. |
Which of the following statements is NOT true of amino acids? A. They come in polar, non-polar, and electrically charged forms. |
E. They are distinguished from each other by variation in their carboxyl groups. |
A polypeptide chain is a linear polymer of amino acids. Peptide bonds are present between which of the two following groups? A. the carbon atom of the carboxyl group and the oxygen atom double-bonded to it |
C. the carbon atom of the carboxyl group and the nitrogen atom of the amino group |
The secondary structure of a protein refers to: A. the linear assembly of amino acids into a chain. |
C. the twisting of the amino acid chain into a corkscrew-like shape or into a zigzag folding pattern. |
Enzymes: A. catalyze reactions that release energy, but not those that consume energy. |
E. increase the rate at which a reaction occurs. |
Which of the following statements about enzymes is NOT true? A. Enzymes are permanently changed when they take place in a chemical reaction. |
A. Enzymes are permanently changed when they take place in a chemical reaction. |
Phosphate groups are important components of: A. triglycerides. |
B. nucleic acids. |
DNA is made of: A. nucleotides. |
A. nucleotides. |
An amino acid is to a polypeptide as: A. testosterone is to a steroid hormone. |
B. a nucleotide is to a nucleic acid. |
Which type of macromolecule is an informational molecule? A. DNA |
A. DNA |
Which of the following nucleotide bases are present in equal amounts in DNA? A. thymine and cytosine |
E. adenine and thymine |
Phenylketonuria is an inherited disorder. Affected individuals have a defective enzyme called phenylalanine hydroxylase. The substance these individuals cannot break down is a(n): A. protein. |
E. amino acid. |
Which of the following would influence the rate of an enzyme catalyzed reaction? A. substrate concentration |
E. All of the above influence enzymatic rate. |
Which of the following is NOT true of ALL cells? A. They eliminate wastes. |
C. They move by means of flagella or cilia. |
Which statement is NOT part of modern cell theory? A. All living organisms consist of one or more cells. |
B. The first cell arrived on earth from outer space. |
Which of the following is found in both prokaryotic and eukaryotic cells? A. Golgi apparatus |
B. ribosome |
Prokaryotic organisms lack: A. replicator molecules (DNA or RNA). |
D. organelles. |
What are the two distinct "faces" of the phospholipids that make up the surface membrane of a cell? A. a hydrophilic head and a hydrophobic tail |
D. Both a) and c) are correct. |
Which cellular structure makes it possible for a cell to differ structurally and biochemically from its surroundings? A. nucleolus |
C. plasma membrane |
Beta-blockers do all of the following EXCEPT: A. block signaling through adrenaline receptors. |
C. bind to the cytoplasmic side of a receptor protein. |
Which of the following is the most important factor governing a cell’s particular type of interaction with other cells A. the type of animal the cell came from |
D. the pattern of proteins on the cell’s surface |
The net movement of molecules from locally concentrated regions to uniform distributions is best described as: A. active transport. |
C. diffusion. |
Which of the following BEST defines diffusion? A. net movement of particles between cells |
E. net movement of particles from areas of high concentration to areas of low concentration |
In aquatic environments, water moves _____________. A. down the water-concentration scale |
D. down the water-concentration gradient |
You are bored at a lunch meeting and surreptitiously place a raisin in your glass of water. The raisin swells to twice its original size. Relative to the water, the raisin must have been: A. hypertonic. |
A. hypertonic. |
You measure the concentration of a polar molecule inside and outside of a cell. You find that the concentration is high and gradually increasing inside the cell. You also measure the ATP concentration inside the cell and find that it is dropping. What would be your best hypothesis for the process that is occurring? A. facilitated diffusion |
A. facilitated diffusion |
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which _______________ converts to ATP, the "fuel" used by all living things. A. speciation |
D. cellular respiration |
Life gains most of its energy from: A. water. |
B. sunlight. |
A cyclist rides her bike up a very steep hill. Pick from the following choices the one that properly describes this example in energetic terms. A. Potential energy in food is converted to kinetic energy as muscles push the cyclist up the hill. |
E. Both a) and d) are correct. |
Within the study of thermodynamics, a closed system is defined as a system in which energy does not come in and energy does not go out. Which of the following is considered a closed system? A. the universe |
A. the universe |
Each ATP molecule is composed of three separate subunits. Which of the following is NOT a proper description of one of these subunits? A. three carbon-nitrogen rings |
A. three carbon-nitrogen rings |
The phosphate groups in ATP: A. are covalently bonded to each other. |
E. All of the above are correct. |
Which of the following is NOT a product of photosynthesis? A. glucose |
D. carbon dioxide |
A green plant can carry out photosynthesis if given nothing more than: A. water. |
C. water, light, and air. |
Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve? A. air |
E. oxygen |
Carotenoids: A. are primary pigments in certain plants and algae chloroplasts that fix carbon in place of chlorophyll. |
E. are accessory pigments in chloroplasts that protect the chlorophyll by absorbing excessive light energy. |
Chlorophyll b and the carotenoids are important as receptors of light energy because they: A. can absorb green light. |
C. respond to wavelengths different from the wavelengths that chlorophyll a responds to. |
The most effective portion(s) of the visible spectrum in driving photosynthesis is (are): A. the violet-blue portion. |
E. Both a) and c) are correct. |
Biologically speaking, a pigment: A. is a molecule that absorbs carbon dioxide. |
C. is a molecule that absorbs a photon. |
During photosynthesis, visible light has enough energy to directly: A. excite electrons. |
A. excite electrons. |
What are the resulting products of the splitting of water in photosynthesis? A. electrons, oxygen, and hydroxide ions |
E. electrons, oxygen, and hydrogen ions |
Oxygen gas produced during photosynthesis originates as: A. oxygen atoms are released by the metabolism of carbohydrates. |
E. oxygen atoms contained in water molecules. |
The carbon dioxide needed for photosynthesis enters the plant through the: A. stroma. |
B. stomata. |
Cellular respiration is the process by which: A. oxygen is produced during metabolic activity. |
D. energy from the chemical bonds of food molecules is captured by an organism. |
An inherited disease results from abnormal mitochondria passed from mother to child. Using your knowledge of the function of mitochondria within human cells, which of the following is the most likely description of the symptoms of this disease? A. extreme sensitivity to UV light, resulting in skin cancer at a very young age |
C. extreme muscle weakness |
Cellular respiration is an efficient process that captures approximately 35% of the energy in glucose. From 1 molecule of glucose, it yields: A. 3 to 4 ATP, depending on the tissue and organism. |
D. 30 to 32 ATP, depending on the tissue and organism. |
A person’s unique DNA is carried within some of the cells and tissues of their body. These include all of the following EXCEPT: A. intestines |
E. All of the above contain a person’s DNA. |
Double-stranded DNA that contains a high G-C content requires a higher temperature in order to separate the two DNA strands. This is because: A. G-C base pairing involves three hydrogen bonds while A-T pairing involves only two. |
A. G-C base pairing involves three hydrogen bonds while A-T pairing involves only two. |
Most genes come in alternative forms called: A. chromosomes. |
D. alleles. |
In order for translation to occur: A. the nuclear membrane must dissolve. |
D. there must be large numbers of free amino acids present in the cytosol. |
The term "gene expression" refers to: A. which amino acid is "called for" by a particular codon |
E. None of the above describes what "gene expression" means. |
A frameshift mutation: A. leaves the amino acid sequence unchanged. |
B. results from an insertion or deletion in a DNA sequence. |
A mutation that involves the addition, subtraction, or substitution of a single base is known as A. an inversion. |
E. a point mutation. |
Animal cells have "counters" that keep track of how many times a cell has divided. These counters are called: A. odometers. |
B. telomeres. |
In DNA replication, when the DNA molecule separates into two strands: A. it is possible to reconstruct perfectly all the information on the missing strand because one strand carries all the information needed to construct its complementary strand. |
E. Only a) and b) are correct. |
Somatic cells can include: A. kidney cells. |
E. Both a) and b) are correct. |
The rate at which mitosis occurs varies dramatically for different types of cells. The most rapid cell division occurs: A. in the blood and the heart. |
C. in the blood and the cells lining the various tissues of organs. |
Mitosis results in: A. daughter cells with the same number of chromosomes but different combinations of alleles. |
C. daughter cells with the same number and composition of chromosomes. |
In order for a eukaryotic cell to undergo reproduction and divide, certain steps must be successfully completed. Which of the following choices is NOT one of these necessary steps? A. There must be proper packaging and segregation of the replicated DNA. |
B. There must be proper reshuffling of the genetic material in order to provide diversity within the gametes. |
Chemotherapy is one common treatment for cancer. Which of the following are aspects of chemotherapy? A. Drugs that interfere with cell division are administered to the patient. |
D. All of the above are correct. |
Cancer cells are different from other cells in that they have lost their "contact inhibition." "Contact inhibition" means: A. DNA replication in most cells stops when the double helix comes in contact with particular enzymes. |
D. most cells stop dividing when they bump up against other cells or collections of cells. |
Which of the following are features that distinguish cancer cells from normal cells? A. Normal cells undergo cytokinesis; cancer cells do not undergo cytokinesis. |
E. Both b) and d) are correct. |
In humans, the haploid number, n, equals: A. 2n. |
C. 23. |
During meiosis, chromatin: A. reduces the incidence of crossing over. |
C. condenses, becoming more tightly coiled. |
When ATP is hydrolyzed to ADP, what happens? |
One phosphate is removed. |
Photosynthesis is the process by which __________________ use the energy from sunlight to produce sugar. |
plants, some bacteria, and some protistans |
The three different known biochemical pathways organisms will use to photosynthesize include which of the following? |
C3, C4, CAM |
A molecule of chlorophyll increases in potential energy: |
when one of its electrons is boosted to a higher-energy excited state upon being struck by a photon of light. |
The word anabolism refers to constructive, build-up, or synthesis reactions while the word catabolism refers to destructive, breakdown, or digestive reactions. What does it mean to say that in a cell, catabolism fuels anabolism? |
Cellular respiration (catabolism) forms the ATP that is used to power anabolic reactions. |
Which of the following products of the light reactions of photosynthesis are later employed in the Calvin cycle? |
NADPH and ATP |
Life gains most of its energy from: |
sunlight. |
In studying the way energy is handled in the universe, one scientist summarized: "Not only can’t you get something for nothing, but you can’t even break even!" Which of the following do these two statements best summarize? |
the first and second laws of thermodynamics |
The first law of thermodynamics states that energy is constant; it can ____________________, but not _______________. |
be transferred and transformed; created or destroyed |
How many phosphates do ADP & ATP each have? |
2, 3 |
Carbon dioxide and oxygen move into and out of plants through: |
stomata. |
During cellular respiration, most of the energy contained within the bonds of food molecules is captured in: |
the Krebs cycle and electron transport chain. |
According to the clip, what is the main function of chloroplasts? |
harvest light energy to make sugars and other plant tissue |
Potential energy is to kinetic energy as ______________ is to _____________. |
water held behind a dam, water power being used to turn electric turbines |
Energy used in cellular respiration can originate from: |
carbohydrates, proteins, and fats. |
The graphs above show data relating to seasonal differences in the amount of pigment molecules present in leaves and how this is related to leaves changing colors. What can you conclude from these graphs? |
The colors of leaves in the fall are a consequence of reduced amounts of chlorophylls a and b in the leaves. |
All alcoholic beverages are produced as the result of: |
cellular respiration by yeast occurring in the absence of oxygen. |
When a chlorophyll molecule absorbs light, exciting an electron, the chlorophyll molecule: |
gains potential energy. |
Which of the following is NOT a form of kinetic energy? |
a covalent bond linking phosphate molecules |
Every time a source of energy is converted from one form to another: |
some of the energy is converted to heat, which is one of the least usable forms of kinetic energy. |
In which digestive phase do energy-rich molecules actually enter the bloodstream and tissues of the body? |
absorption phase |
What scientist(s) first demonstrated in the laboratory that organic compounds could be synthesized in an abiotic environment? |
Urey and Miller |
If formerly interbreeding organisms are prevented from the production of fertile offspring, ____________ has occurred. |
reproductive isolation |
Why do birds eat gravel? |
The gravel collects in the stomach where it helps to grind up the food they eat. |
In the koala, the cecum: |
is the location of symbiotic bacteria that help digest plant matter. |
Every time a source of energy is converted from one form to another: |
some of the energy is converted to heat, which is one of the least usable forms of kinetic energy. |
The classic "Miller experiments," performed in the 1950s by Harold Urey and Stanley Miller, were the first to show that: |
simple organic molecules, such as amino acids, could form spontaneously in the laboratory under chemical conditions mimicking those of primitive Earth. |
Which digestive enzymes are secreted in the stomach? |
pepsin |
During C4 photosynthesis: |
plants are able to continue producing sugars even when they must close their stomata to reduce water loss during hot days |
Cows have large bacterial floras in their digestive system. Which of the following best explains why cows have microbes in their rumen? |
The microbes break down the cellulose in the plants that cows eat. |
Desert plants reduce water loss by ____________. |
closing stomatas |
Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: |
a postzygotic barrier to reproduction. |
The six groups of nutrients needed in the human diet are: |
carbohydrates, lipids, proteins, vitamins, minerals, and water. |
The Biological Species Concept: |
defines a species as any group of actually or potentially interbreeding species that produce viable offspring. |
The graphs above show data relating to seasonal differences in the amount of pigment molecules present in leaves and how this is related to leaves changing colors. What can you conclude from these graphs? |
The colors of leaves in the fall are a consequence of reduced amounts of chlorophylls a and b in the leaves. |
According to the clip, what is the main function of chloroplasts? |
harvest light energy to make sugars and other plant tissue |
_________________ produces new species and _________________ takes them away. |
Speciation ; extinction |
Most mammals (including humans) prefer the taste of fats to carbohydrates and proteins. Why? |
The caloric content of a gram of fat is more than double that of a gram of protein or carbohydrate. |
Much of what is known about the history of the origin of life came from: |
the study of fossils. |
Potential energy: |
is contained in matter placed in certain positions or arrangements. |
Every time a source of energy is converted from one form to another: |
some of the energy is converted to heat, which is one of the least usable forms of kinetic energy. |
Glycolysis: |
occurs in all cells. |
Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve? |
oxygen |
Which of the following products of the light reactions of photosynthesis are later employed in the Calvin cycle? |
NADPH and ATP |
All alcoholic beverages are produced as the result of: |
cellular respiration by yeast occurring in the absence of oxygen. |
Bubbles come from the leaves of an Elodea plant when it is put under water because: |
oxygen is a by-product of photosynthesis. |
A green plant can carry out photosynthesis if given nothing more than: |
water, light, and air. |
Life gains most of its energy from: |
sunlight. |
The carbon dioxide needed for photosynthesis enters the plant through the: |
stomata. |
Fermentation reactions generally occur under conditions of: |
low oxygen concentrations. |
Chlorophyll b and the carotenoids are important as receptors of light energy because they: |
respond to wavelengths different from the wavelengths that chlorophyll a responds to. |
Theodor Engelmann broadcast light that had been passed through a prism onto a mat of algae. This exposed different parts of the algae to different wavelengths of light. When he added aerobic bacteria to the system, he noted that the largest groups of bacteria aggregated in the areas of the algae illuminated by the blue and red light. What did Engelmann discover from this experiment? |
Bacteria aggregated in the area in which the most oxygen was being released. |
Photons excite electrons in chlorophyll. These electrons are then trapped by the primary electron acceptor. How does the photosystem replace the trapped electrons? |
The photosystem replaces its light-excited electrons by extracting electrons from water. |
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which _______________ converts to ATP, the "fuel" used by all living things. |
cellular respiration |
The first law of thermodynamics states that energy is constant; it can ____________________, but not _______________. |
be transferred and transformed; created or destroyed |
Which of the following is NOT a form of kinetic energy? |
a covalent bond linking phosphate molecules |
Which of the following is NOT a product of photosynthesis? |
carbon dioxide |
During the Krebs cycle: |
the products of glycolysis are further broken down, generating additional ATP and the high-energy electron carrier NADH. |
Which of the following energy-generating processes is the only one that occurs in all living organisms? |
glycolysis |
Aerobic bacteria: |
lack mitochondria. |
In photosynthesis, both the first and the second photosystems: |
generate energy storage molecules. |
If a thylakoid were punctured so that its interior was no longer separated from the stroma, which of the following processes would be most directly affected? |
the synthesis of ATP |
In the late summer, cooler temperatures have which of the following effects on some trees? |
Chlorophyll production decreases. |
An inherited disease results from abnormal mitochondria passed from mother to child. Using your knowledge of mitochondria’s function within human cells, which of the following is the most likely description of the symptoms of this disease? |
extreme muscle weakness |
During electron transport in photosynthesis, the inner compartment of the thylakoid membrane becomes: |
more acidic than the stroma. |
Fermentation reactions generally occur under conditions of: |
low oxygen concentrations. |
Why are leaves green? |
Chlorophyll molecules mainly absorb light in the blue-violet and red-orange part of the electromagnetic spectrum. Chlorophyll does not absorb much green light, which is reflected to our eyes. |
Bubbles come from the leaves of an elodea plant when it is put under water because: |
oxygen is a by-product of photosynthesis. |
Which of the following statements is most correct concerning the movement of materials through the stomata? |
Water and O2 move out, CO2 moves in. |
A molecule of chlorophyll increases in potential energy: |
when one of its electrons is boosted to a higher-energy excited state upon being struck by a photon of light. |
File this one under "confusing plant terminology." Both a plant’s stoma and its stroma are important in photosynthesis. What’s the difference between stoma and stroma? |
Stoma is the singular of stomata, the gas exchange pores in the leaf of the plant, while stroma is the fluid that fills the inner space of a chloroplast. |
Anaerobic mammals: |
do not exist. |
Which of the following is NOT a form of kinetic energy? |
a covalent bond linking phosphate molecules |
The C4 mechanism of carbon fixation is an advantage for plants that live in: |
hot, dry climates. |
Humphrey Bogart said in Casablanca that some things "don’t amount to a hill of beans in this crazy world." But a "hill of beans" does have energetic value, both as food and as a tall hill. In what form(s)is/are the energy in this bean hill? |
Both a) and c) are true. |
During the Krebs cycle: |
the products of glycolysis are further broken down, generating additional ATP and the high-energy electron carrier NADH. |
Carbon dioxide and oxygen move into and out of plants through: |
stomata. |
In studying the way energy is handled in the universe, one scientist summarized: "Not only can’t you get something for nothing, but you can’t even break even!" Which of the following do these two statements best summarize? |
the first and second laws of thermodynamics |
In plant cells, chloroplasts: |
Both b) and d) are correct. |
What are the two major sources of electrons needed to drive the proton-pumping channels in chemiosmosis? |
Both a) and b) are correct. |
Which of the following is NOT true about cellular respiration? |
Carbohydrates, like starch, are broken into simple sugars and then enter the electron transport chain. |
By weight, the bulk of a plant’s organic material is derived from: |
carbon dioxide. |
According to the clip, where are the light-harvesting organelles found within plants? |
near the surface of the leaves |
Which of the following foods can be used to produce ATP in cellular respiration? |
carbohydrates, proteins and fats. |
All alcoholic beverages are produced as the result of: |
cellular respiration by yeast occurring in the absence of oxygen. |
Life gains most of its energy from: |
sunlight. |
When ATP is hydrolyzed to ADP, what happens? |
One phosphate is removed. |
When a chlorophyll molecule absorbs light, exciting an electron, the chlorophyll molecule: |
gains potential energy. |
Photosynthesis is the process by which __________________ use the energy from sunlight to produce sugar. |
plants, some bacteria, and some protistans |
The electrons at the very end of both photosystems are eventually picked up by an electron carrier to become: |
NADPH. |
Desert plants reduce water loss by ____________. |
closing stomatas |
The three different known biochemical pathways organisms will use to photosynthesize include which of the following? |
C3, C4, CAM |
Which of the following would be a typical product of the dark reactions of photosynthesis? |
3-phosphoglycerate acid (3-PGA) |
Every time a source of energy is converted from one form to another: |
some of the energy is converted to heat, which is one of the least usable forms of kinetic energy. |
The water released during cellular respiration is called: |
metabolic water. |
The high degree of molecular organization in living cells is: |
attained and maintained only as long as energy fuels the organization. |
A pigment that absorbs all wavelengths of visible light appears: |
black. |
The first law of thermodynamics states that energy is constant; it can ____________________, but not _______________. |
be transferred and transformed; created or destroyed |
In your body, when energy is released from the breakdown of a molecule such as glucose: |
some of it may be harnessed by building the unstable high-energy bonds that attach phosphate groups to ATP. |
Fill in the blanks. CAM plants close stomata when ________ are _______ and __________ is ________. |
temperatures, high, humidity, low |
In photosynthesis, gaseous molecular oxygen (O2) is released. This comes from a compound that goes into photosynthesis. Which compound is it? |
water (H2O) |
During electron transport in photosynthesis, the inner compartment of the thylakoid membrane becomes: |
more acidic than the stroma. |
Which of the following is NOT a form of kinetic energy? |
a covalent bond linking phosphate molecules |
The most effective portion(s) of the visible spectrum in driving photosynthesis is (are): |
the violet-blue portion. |
All of the following statements regarding C4 plants are correct EXCEPT: |
Rubisco is no longer necessary to make glucose. |
The first cells evolved in an atmosphere that lacked free _____________. Their metabolism resulted in the accumulation of ________________ in the atmosphere. |
oxygen; carbon dioxide |
A green plant can carry out photosynthesis if given nothing more than: |
water, light, and air. |
About how many mitochondria might you expect to find in a single human skin cell? |
hundreds or thousands |
What is the first step in CAM photosynthesis? |
Plants open their stomata at night to take in carbon dioxide. |
Which of the following sequences accurately represents the flow of electrons during photosynthesis? |
H2O → NADPH → Calvin cycle |
Three different metabolic pathways are responsible for the production of ATP. What are they? |
glycolysis, the reactions on the electron transport chain, and the Krebs (citric acid) cycle |
The graphs above show data relating to seasonal differences in the amount of pigment molecules present in leaves and how this is related to leaves changing colors. What is the independent variable presented in these graphs? |
Time at which the amount of pigment in the leaves was measured. |
Time at which the amount of pigment in the leaves was measured. |
the products of glycolysis are further broken down, generating additional ATP and the high-energy electron carrier NADH. |
Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve? |
oxygen |
Most plant leaves contain yellow and orange carotenoids as well as green chlorophylls. Why then are most leaves greenish? |
There is a much greater concentration of chlorophylls than carotenoids in plant leaves. |
Photons excite electrons in chlorophyll. These electrons are then trapped by the primary electron acceptor. How does the photosystem replace the trapped electrons? |
The photosystem replaces its light-excited electrons by extracting electrons from water. |
What is the source of the electrons that replace those lost by chlorophyll a in the photosystems? |
water |
Potential energy: |
is contained in matter placed in certain positions or arrangements. |
Every time a source of energy is converted from one form to another: |
some of the energy is converted to heat, which is one of the least usable forms of kinetic energy. |
Glycolysis: |
occurs in all cells. |
Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve? |
oxygen |
Which of the following products of the light reactions of photosynthesis are later employed in the Calvin cycle? |
NADPH and ATP |
All alcoholic beverages are produced as the result of: |
cellular respiration by yeast occurring in the absence of oxygen. |
Bubbles come from the leaves of an Elodea plant when it is put under water because: |
oxygen is a by-product of photosynthesis. |
A green plant can carry out photosynthesis if given nothing more than: |
water, light, and air. |
Life gains most of its energy from: |
sunlight. |
The carbon dioxide needed for photosynthesis enters the plant through the: |
stomata. |
Fermentation reactions generally occur under conditions of: |
low oxygen concentrations. |
Chlorophyll b and the carotenoids are important as receptors of light energy because they: |
respond to wavelengths different from the wavelengths that chlorophyll a responds to. |
Theodor Engelmann broadcast light that had been passed through a prism onto a mat of algae. This exposed different parts of the algae to different wavelengths of light. When he added aerobic bacteria to the system, he noted that the largest groups of bacteria aggregated in the areas of the algae illuminated by the blue and red light. What did Engelmann discover from this experiment? |
Bacteria aggregated in the area in which the most oxygen was being released. |
Photons excite electrons in chlorophyll. These electrons are then trapped by the primary electron acceptor. How does the photosystem replace the trapped electrons? |
The photosystem replaces its light-excited electrons by extracting electrons from water. |
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which _______________ converts to ATP, the "fuel" used by all living things. |
cellular respiration |
The first law of thermodynamics states that energy is constant; it can ____________________, but not _______________. |
be transferred and transformed; created or destroyed |
Which of the following is NOT a form of kinetic energy? |
a covalent bond linking phosphate molecules |
Which of the following is NOT a product of photosynthesis? |
carbon dioxide |
During the Krebs cycle: |
the products of glycolysis are further broken down, generating additional ATP and the high-energy electron carrier NADH. |
Which of the following energy-generating processes is the only one that occurs in all living organisms? |
glycolysis |
Aerobic bacteria: |
lack mitochondria. |
In photosynthesis, both the first and the second photosystems: |
generate energy storage molecules. |
Biology is ______. |
The study of living things |
Biological literacy is the ability to: |
-use the process of scientific inquiry to think creatively about real- world issues that have a biological component – communicate ideas about biology to others – integrate ideas about biology into your decision making |
Science is self- correcting. This means that : |
Science actively seeks to disprove its own theories and hypothesis |
A null hypothesis: |
is the premise that no difference exists between a treatment and control groups |
The proposal explanation for a phenomenon is BEST described as: |
A hypothesis |
A scientific theory is one that: |
is the result of all scientific experiments |
Which of the following is the BEST description of a control group in an experiment? |
The control group is identical to each test group except for one variable |
An element: |
is a substance that cannot be broken down chemically into any other substance |
The four most abundant elements in living organisms are: |
Carbon, Hydrogen, Nitrogen and Phosphorus |
Which of the following elements have four elections in their outer shells? |
Carbon and silicon |
If you were going to build a large macromolecule or polymer it needs to be strong. What type of chemical bond do you think would work best for building macromolecules? |
Covalent |
Carbohydrates |
-Act as a relatively quickly available source of fuel -serve as carbon skeletons that can be rearranged to form other molecules that are essential for biological structures and functions like nucleic acids. -on the plasma membrane serve as cell recognition signals |
Which of the following is not an important biological function of lipids? |
-Insulation -regulation of growth and development -energy storage -protection of internal organs and tissues |
The message on a DNA molecule is |
used to make proteins |
Which of the following statement about enzymes is NOT true? |
Enzymes are permanently changed when they take place in a chemical reaction |
Which of the following nucleotide bases are present in equal amounts of DNA? |
Adenine and Thymine |
Prokaryotic organisms lack: |
organelles |
According to the theory of endosymbiosis, the origin of chloroplasts probably involved: |
engulfing of small photosynthetic prokaryotes by larger cells |
Which of the following statements about chitin is incorrect? |
Humans easily digest chitin as a quick form of energy |
Which of the following is the most important factor governing a cell’s particular type of interaction with other cells |
The pattern of proteins on the cell’s surface |
Which of the following BEST summarizes the differences between osmosis and diffusion? |
Osmosis deals only with water |
Which of the following is NOT a way in which the cell’s surface membrane interacts with the exterior environment? |
The cellular surface organizes the interior organelle organization of the cell |
What cell type in animals has a flagellum? |
The sperm cell |
Which of the following is NOT a function of the plant vacuole? |
Photosynthesis |
Which one of the following statements best represents the relationship between respiration and photosynthesis? |
Photosynthesis stores energy in complex organic molecules, while respiration releases it. |
Which of the following is NOT a form of kinetic energy? |
A covalent bond linking phosphate molecules |
Every time a source of energy is converted from one form to another: |
Some of the energy is converted to heat, which is one of the least usable forms of kinetic energy |
Which of the following is NOT a product of photosynthesis? |
Carbon Dioxide |
Chlorophyll b and the carotenoids are important as receptors of light energy because they: |
respond to wavelengths different from the wavelengths that chlorophyll a responds to |
Aerobic training can cause our bodies to produce more mitochondria in cells. Why is this beneficial? |
Chemical reactions in the mitochondria provide energy for exercise |
Bubbles come from the leaves of an Elodea plant when it is put under water because: |
oxygen is a by-product of photosynthesis |
The carbon dioxide needed for photosynthesis enters the plant through the: |
Stomata |
Cellular respiration is the process by which: |
energy from the chemical bonds of food molecules is captured by an organism |
Animal fats and plant oils are sometimes used as sources of fuel for automobile engines. How is energy harvested from these molecules? |
They contain long chains of hydrocarbons that, when broken, release the energy stored in the bonds linking the atoms together. |
Energy used in cellular respiration can originate from: |
carbohydrates, proteins, fats. |
Fermentation reactions generally occur under conditions of: |
low oxygen concentrations |
A ______ is a pill that looks identical to a pill that contains the active ingredient in a scientific trial, but contains no active ingredient itself. |
placebo |
All matter on earth, both biotic and abiotic, is made up of: |
Atoms |
An atom can be changed into an ion by adding or removing: |
An electron |
There are three principal types of bonds that hold multiple atoms together. These are: |
Covalent bonds, ionic bonds, and hydrogen bonds. |
Which of the following facts supports the claim that the mitochondria developed from bacteria that were long ago phagocytosed into eukaryotic cells? |
Mitochondria have their own DNA |
Which of the following is NOT an important structural feature on the surface membrane of an animal cell? |
Cell Wall |
Which of the following BEST defines diffusion? |
net movement of particles from areas of high concentration to areas of low concentration |
Sugar and CO2 are dissolved in water to make carbonated soft drinks. Which of the following is the solute? |
The sugar and the CO2 |
_____ are found in all metabolically active cells and are involved primarily in transporting materials within, into, and out of cells. |
Vesicles |
Life gains most of its energy from: |
sunlight |
Photosystems: |
are arrangements of light-catching pigments within chloroplasts |
Where does the Calvin cycle take place? |
in the cellular cytoplasm |
If a marathon runner is in the last 2 miles of a full-length marathon, the runner is most likely making ATP by: |
anaerobic cellular respiration |
Alcoholic beverages are produced as a result of |
glucose breakdown by yeast occurring in the absence of oxygen |
DNA is now often used as evidence in criminal trials. It is particularly useful because it can be found in |
Hair, Saliva, Bone, Dead skin cells |
In any DNA molecule, the number of guanine bases will : |
always be equal to the number of cytosine bases |
The complementary base pairs in a DNA molecule are stabilized by: |
-the electrostatic interactions of the charged backbone -a covalent bond |
from DNA to protein involves which series of events? |
Transcription; translation |
One of the four nucleotide bases in DNA is replaced by a different base in RNA. Which base is it, and what is it replaced by? |
Thymine, replaced by Uracil |
An important difference between mRNA and DNA is |
mRNA contains uracil instead of thymine, which is found in DNA |
Which of the following molecules is NOT DIRECTLY involved in translation? |
DNA |
In asexual reproduction, daughter cells inherit their DNA from ____. |
A single parent |
The purpose of mitosis is to enable existing cells |
to generate new, genetically identical cells |
Somatic cells can include |
Kidney cells, heart cells, liver cells |
Using a light microscope, it is easiest to see chromosomes: |
during mitosis and meiosis because the condensed chromosomes are thicker and therefore more prominent |
The human genome is made up of: |
46 Chromosomes |
Crossing over takes place during |
meiosis |
The egg cells of a horse contain 32 chromosomes. How many chromosomes are in the horse’s somatic cells? |
64 |
Whether it is egg or sperm being produced through meiosis, under normal circumstances, each gamete ends up with: |
Equal amounts of cytoplasm |
Which of the following statements is NOT correct of human sex chromosomes? |
All diploid cells have both an X and a Y chromosome |
In some species, sex is determined by environmental, rather than genetic factors. this is true of: |
sea turtles |
How many human traits are controlled by a single gene? |
over 9,000 |
Which of the following did Gregor Mendel never see? |
a chromosome |
The law of segregation states that |
alleles for a given trait segregate into different gametes |
Which of the following statements about dominant traits is correct? |
They usually suppress the expression of the recessive trait |
An individual with two individual alleles for a particular gene is said to be: |
homozygous for that gene |
The test- cross |
-makes it possible to determine the genotype of an individual of unknown genotype who exhibits the dominant version of a trait – is a cross of an individual whose genotype for a trait is not known with an individual homozygous- recessive for the trait – sometimes requires the production of multiple offspring in order to reveal the genotype of an individual whose genotype is unknown |
A situation in which the heterozygote offspring of two homozygous individuals show a phenotype intermediate between those of the parents is called: |
incomplete dominance |
A population is |
a group of individuals of the same species that live in the same general location and have the potential to interbreed |
Evolution is defined as: |
a change in the frequency of alleles in a population over time |
The appropriate unit for defining and measuring genetic variation is the: |
population |
All of the following statements are true about mutations EXCEPT |
the mutation rate can be affected by genetic drift |
A storm washed five female and five male tiger beetles from the mainland to a small island that had no previous population of tiger beetles. In tiger beetles, having six spots (A) is dominant to having four spots (a). All ten beetles had six spots, bot one male and one female were heterozygous for the four-spot trait. If six of the beetles died randomly without reproducing, the ration of the genotype could be quite different in subsequent generations. This change in allele frequencies would be an example of: |
genetic drift |
Select from the choices below the statement that best describes the effect of the migration of individuals into a population. |
Migration of individuals into a population generally increases the genetic variability within a population |
For a population to evolve through natural selection: |
its members must possess inheritable variation |
Which of the following is the best measure of an organisms’ fitness? |
the number of fertile offspring it produces |
Natural selection results from interactions |
individual organisms and their enviorment. |
Artificial selection is likely to produce population- level changes most quickely in organisms with: |
A short generation time |
Under the right conditions, which type of selection is most likely to lead to the formation of new species? |
disruptive |
From an evolutionary perspective, behavior can be viewed best as: |
a trait that can be acted on by natural selection |
Species that are only distantly related but occupy similar enviorments often come to resemble each other through a process known as: |
convergent evolution |
During the breeding season, the sight of a red belly on any other stickleback triggers aggressive behavior in a male stickleback. This is called: |
A fixed action pattern |
Which of the following best illustrates an instinctive behavior in cats? |
hunting and killing |
Kin selection is best defined as: |
selection for a behavior that lowers an individual’s own chances of survival or production, but raises those of a relative |
When one vervent monkey grooms another, the monkey being groomed has its fitness improved because |
the groomer is removing parasites |
When individuals of any species find themselves in an enviorment that differs from the environment to which they are evolutionarily adapted, we observe that: |
They engage in behaviors better fit to the environment the species evolved in than the enviornment the individual organisms find themselves in |
Which of the following is the best way to distinguish male from female? |
Male produce motile gametes |
The sex with the greater energetic investment in reproduction will be _____ when it comes to mating |
more discriminating |
Chemicals released by an individual into the environment that trigger behavioral responses in other individuals are called |
Pheromones |
Which of the following statements BEST describes the difference between artificial and natural selection? |
Natural selection acts without the input of humans; artificial selection requires human input. |
Which of the following statments about Charles Darwin is FALSE? |
He was enthusiastic about unleashing his theory of natual selection on the world as soon as he though of it |
"Survival of the fittest" may be a misleading phrase to describe the process of evolution by natural selection because: |
survival matters less to natural selection than reproductive success does |
Phase 1 of the creation of life on earth was ____. Phase 2 was the formation of self-replication, information-containing molecules. Phase 3 was the development of a membrane, which enabled metabolism and created the first cells |
the formation of small molecules containing carbon and hydrogen |
The biological species concept is primarily based on |
reproductive isolation |
Horses and Donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: |
A postzygotic barrier to reproduction |
_____ isolating mechanisms include hybrid mortality and hybrid infertility |
prezygotic |
In captivity, tigers and lions have been known to interbreed producing hybrids, known as ligers. Why does this NOT make them the same species, according to the biological species concept? |
Captivity is not a natural condition |
Wolves and bears are placed in the same taxonomic order. Therefore, they most also be classified in the same: |
Phylum |
The morphological species concept: |
groups species based on similar phenotype |
Speciation that occurs when there is a geographic isolation is called _____ speciation |
allopatric speciation |
Which of the following senarios would best facilitate adaptive radiation? |
A population of birds becomes stranded on an island |
All mammals have hair because they inherited that trait from a common ancestor. Features that are inherited from a common ancestor are called: |
homologous features |
Analogous features are problematic when constructing evolutionary trees because: |
They are the result of natural selection rather than common ancestry |
To which one of the following is the bat’s wing NOT homologous? |
The dragonfly’s wing |
The pace of evolution in which there is little change for long periods of time interrupted by short periods with major changes is called |
punctuated equilibrium |
____ produces new species and ____ takes them away. |
Speciation; exinction |
Which of the following is NOT correct about all animals? |
all have true tissues |
Why is the amniotic egg considered a key evolutionary innovation? |
It greatly increases the survival probabilities of eggs in a terrestrial environment |
Which of the following are chordates |
frogs, humans, fish, lampreys |
Sharks have ____ skeletons, while sunfish have _____skeletons |
cartilaginous; bony |
Birds are _____, while turtles are _____. |
endotherms, ectotherms |
Which of the following series of events correctly describes the evolutionary history of the vertebrates, from the earliest to latest in time? |
lungs – jaws – four limbs – hair |
The most specious group of exant animals are the ______. |
invertebrates |
What is the major developmental characteristic that shows the close relationship between echinoderms and chordates? |
in both groups, the gut develops back to front |
The molluscan class Cephalopoda includes all of the following kinds of animals EXCEPT: |
cuttlefish |
Two important features that distinguish mammals from any other type of animal are: |
hair and mammary glands |
Which of the following is an example of echinoderm? |
Starfish |
Members of which of the following groups exhibits radial symmetry? |
Cnidaria |
As adults, sponges of the phylum Porifera are sessile, meaning that they ____. |
live attached to a solid structure and do not more around |
The ferns possess all of the following EXCEPT |
Seeds |
The most common term for the action of transerring pollen grains from an anther onto a stigma is |
pollination |
Which of the following is NOT an example of a gymnosperm? |
ferns |
In angiosperms the _____ are the specialized reproductive organs whose main function is to bring together the sperm and egg |
flowers |
The ____ are the most diverse group of plants living today |
angiosperms |
Which of the following is NOT an example of an angiosperm |
pine trees |
Flowering plants have evolved to attract animals to assist them in pollination. Which of the following animals is not a common pollinator of flowering plants? |
bats, hummingbirds, moths, bumblebees |
Why are insectivorous plants (plants that eat insects) most common in boggy areas? |
because insects tend to live in boggy areas |
The cell wall of fungi is made of _____ |
chitin |
Of the group mentioned below, the fungi are most closely related to: |
animals |
Which of the following is NOT a correct statement about microbes? |
Microbes are not genetically diverse |
Which of the following is NOT one of the kingdoms included within the Eukarya domain? |
Archaea |
Bacteria reproduce by ____, which creates ____ exact daughter cell clones of the original parent cell |
binary fission; two |
Which of the following statements about the archaeal genome is correct? |
The archaeal genome is primarily composed of genes that cannot be found in either of the other domains of life, making them unique |
How did mitochondria originate in protists? |
They derived from bacterial cells that were taken via in endocytosis and later specialized |
The first eukaryotes were |
protists |
The basic structure of a virus consists of: |
Genetic information in the form of DNA or RNA enclosed within a protein coat |
Viral DNA is replicated by: |
using the host’s metabolic machinery and energy |
Many scientists do not consider viruses to be living organisms. Why is this? |
Because they are dependent on their host’s metabolic machinery for replication |
Which of the following types of organisms is immune to viral infection? |
Protists, Fungi, Birds, Plants |
When preserving areas to act as reservoirs for biodiversity, corridors are important because |
they increase gene flow between the areas they connect |
All of the following phrases could characterize a population EXCEPT |
Several species |
Life histories are based on: |
rate of growth and development, age at death, age of reproduction and number of reproductive events, the amount of energy available to and individual at birth |
Mutations that cause sickness and death after reproduction: |
Can be passed on to future generations |
"Ecology" is defined as: |
The study of the relationships between all living organisms and their enviorments |
an ecosystem |
consists of all of the living and nonliving things functioning together in an area |
Combo with Bio 101 and 4 others
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