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All living things are ___________ |
Organized |
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What is the simplest level at which life may exist |
Cell |
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Are all cells alike |
No, but they have many basic similarities |
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all cells perform various jobs or______ |
Functions |
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what surrounds a cell and separates it from it’s environment? |
Plasma Membrane |
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what is the difference between unicellular and multicellular organisms? |
a unicellular only has one cell A multicellular has 2 or more. |
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Give an example of a unicellular and a multicellular organism |
Unicellular: Bacteria MultiCellular:Fungi |
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Multicellular organisms can be organized into what other levels? |
Organisms, Organ system, organs, cells, tissue, |
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Place a circle around which is made of cells and a box around the one wiht only cell walls: Cork, sponge, wood, plastic, tree |
CElls: Wood, Tree Cell walls: Sponge, Cork, plastic |
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which organisms is unicellular and which is multicellular: Crab and Pond Scum |
Pond Scum: Multicellular Crab: unicellular |
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Define Reproduction |
Production of offsprings |
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Must EVERY member of a particular species be able to reproduce in order for the species to survive? |
Yes, or else the species might go extinct and if individuals of a species never reproduced it could mean the end of the species existence. |
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what would happen if all individuals in a species were sterile(couldn’t have babies)? |
The species would go extinct |
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Reproduction is not essential for the survival of an individual ______ but is essential for the survival of the ________ |
1. Organism 2. Species |
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what is meant by extinction? |
That their are no more left of that certain species |
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Name and define the two basic kinds of reproduction |
Sexual: Where you have to have physical sex to create a baby Asexual: where a species can reproduce without the help of a mate |
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which organisms is asexual and sexual: Bacteria, Hydra, SEa URchin |
Bacteria:Asexual Hydra:Asexual SEa Urchin: Asexual and Sexual |
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how do all organisms begin life? |
as a cell |
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what is the difference between growth and development? |
Development:the changes during the species life Growth: Increase in living material |
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do unicellular organisms grow?do they develop? |
No and Yes |
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do multicellular organisms grow? do they develop? |
Yes and yes |
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how is the growth of a living different from the growth of a nonliving thing? |
Lving things grow on their own while nonliving things need the aid of a living thing |
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What is energy |
Ability to make change. |
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energies importance to living things |
it powers their life process |
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what is a heterotroph |
Use energy from the sun |
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what are the environmental factors that organisms respond to? |
Internal environment |
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organisms must also respond to________factors in order to stay healthy and survive |
External |
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what are the two internal factors organisms respond to? |
Level of water, and nutrients |
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give two examples of how living things respond to change in their environment |
fold leaf together and regulating body temperature |
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if light is applied to the human eye how does it respond? |
closes or blinks rapidly to protect it |
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what is homeostasis |
It allows animals to regulate their internal environment |
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What is biology |
It is the science that studies living organisms |
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living things |
organisms |
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list characterisitcs of living things |
made of one or more cells, obtain or use energy, grow and develop, reproduce, respond to their environment, adapt to their environment, complex organization, metabolism |
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Atom/molecule |
Smallest part of an element or compound |
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organ |
It is a group of similar tissues working together like the heart or lungs |
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population |
all the living and nonliving things living in a similar environment such as a desert |
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biome |
It is all living and nonliving things on earth |
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cell |
smallest level at which life exists |
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organelle |
a living thing that may be unicellular or multicellular |
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community |
a group of one kind of organism living in an area |
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ecosystem |
several populations of organisms living together |
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tissue |
parts of a cell such as the nucleus |
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organism |
group of similar cells working together |
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What is differentiation |
that is when the cells become different from each other as they multiplied and followed the various roles supplied for them by their genetic instructions |
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How does Evolution help scientists? |
It helps them understand how organisms that are alive today came too existence. |
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what is ecology |
the study of how organisms interact with one another and their environment |
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what is ecosystem |
a large environmental community |
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What is the process all living things use to process energy |
metabolism |
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What is cell division |
it is the formation of a two cells from one cell |
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What is development |
the process where a adult organism emerges |
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What produces development |
repeated cell divisiona nd cell differientiation |
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is reproduction essential to the survival of an individual organism |
no |
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is reproduction essential to the survival of a species |
yes |
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What are the steps in scientific method |
observations hypothesis predictions controlled testing theory verification |
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autotroph |
need food to create energy |
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