1) Which of the following statements about archaea is FALSE? |
D) They evolved before bacteria. |
2) If two organisms have similar rRNA sequences, you can conclude that they |
B) evolved from a common ancestor. |
3) Which of the following statements about members of the Kingdom Plantae is FALSE? |
D) They use organic carbon sources. |
4) Which of the following statements about the members of the Kingdom Animalia is FALSE? |
C) They undergo photosynthesis. |
5) A genus can best be defined as |
B) a taxon composed of one or more species and a classification level lying below family. |
6) A bacterial species differs from a species of eukaryotic organisms in that a bacterial species |
D) is a population of cells with similar characteristics. |
7) Which of the following is the best evidence for a three-domain system? |
B) There are three distinctly different sets of metabolic reactions. |
8) A biochemical test, in the microbiology world, is used to determine |
D) capability of a microbe to perform a specific enzymatic activity. |
9) The phylogenetic classification of bacteria is based on |
C) rRNA sequences. |
10) Which of the following statements is a reason for NOT classifying viruses in one of the three |
D) Viruses are not composed of cells. |
11) Which of the following provides taxonomic information that includes the information obtained in the others listed? |
E) cladogram |
Figure 10.1
12) In Figure 10.1, species "c." is most closely related to which of the following? |
D) d |
13) In Figure 10.1, the closest ancestor for both species "a." and species "b." would be which of the following? |
E) 5 |
14) Protists are a diverse group of organisms that are similar in |
E) None of the answers is correct. |
15) In the scientific name Enterobacter aerogenes, Enterobacter is the |
B) genus. |
16) The arrangement of organisms into taxa |
A) shows degrees of relatedness between organisms. |
17) Bacteria and Archaea are similar in which of the following? |
E) plasma membrane ester linkage |
18) Which of the following best defines a strain in microbiological terms? |
C) a mixed population of cells,genetically distinct, but with highly similar phenotypic characteristics |
19) Serological testing is based on the fact that |
B) antibodies react specifically with an antigen. |
20) Phage typing is based on the fact that |
A) bacteria are destroyed by viruses. |
21) Which of the following criteria is most useful in determining whether two organisms are related? |
E) Each answer is equally important. |
22) A clone is |
A) genetically identical cells derived from a single cell. |
Table 10.1 1. 9+2 flagella 23) In Table 10.1, which features are found in nearly all eukarya? |
A) 2, 3, 5 |
Table 10.1 1. 9+2 flagella 24) In Table 10.1, which feature(s) is (are) found only in prokaryotes? |
B) 4, 6 |
25) Into which group would you place a multicellular heterotroph with chitin cell walls? |
D) Fungi |
26) Figure 10.3 This figure shows the results of a gel electrophoresis separation of restriction fragments of the DNA of different organisms. In Figure 10.3, which two are most closely related? |
A) 1 and 3 |
27) Into which group would you place a photosynthetic cell that lacks a nucleus? |
E) Protista |
28) You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group |
B) Archaea. |
29) Into which group would you place a unicellular organism that has 70S ribosomes and a peptidoglycan cell wall? |
B) Bacteria |
Table 10.2 30) Use the dichotomous key in Table 10.2 to identify a gram-negative cell that ferments lactose and uses citric acid as its sole carbon source. |
A) Citrobacter |
31) Use the dichotomous key in Table 10.2 to identify a gram-negative coccus. |
A) Neisseria |
1) The cell membranes of all three domains are composed of straight carbon chains attached to |
False |
2) Chloroplasts possess circular DNA and reproduce by binary fission. |
True |
3) As molecular techniques improve, scientists are finding it necessary to reclassify some genera. |
True |
4) The highest level in the current taxonomic hierarchy is "Kingdom." |
False |
5) Pure cultures of the same species are not always identical in all ways. |
True |
6) At this point in time, scientists believe the vast majority of the domain Bacteria have been discovered. |
False |
7) Once a culture is purified, the next logical step in the process of identifying bacteria is biochemical testing. |
False |
8) Serological testing is used for screening bacterial isolates for similarities. |
True |
9) Western blotting is an immunological test used to identify the antibodies in the serum of an individual suspected of having Lyme disease. |
False |
10) When building a cladogram, the length of the horizontal branch is based on the calculated percent similarity between organisms. |
True |
Micro Ch. 10
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