TEST BANK Microbiology An Evolving Science, 6th Edition, John Foster & Joan Slonczewski, All Chapter 1 - 28

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TEST BANK ss




Microbiology An Evolving Science, 6th Edition,
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s s John Foster & Joan Slonczewski, All Chapter 1 -
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28

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CHAPTER 1: Microbial Life: Origin and Discovery
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MULTIPLE CHOICE
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1. Viruses are: ss



a. infectious agents that infect multi-cellular organisms ss ss ss ss ss



b. noncellular particles that take over the metabolism of a cell to generatess ss ss ss ss ss ss ss ss ss ss



more virusparticles
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c. pathogens that replicate in complex growth media ss ss ss ss ss ss



d. cellular particles that belong to the archaea domain
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e. microbes that consist of lipid membrane enclosed genomes ss ss ss ss ss ss ss




ANS: s s B DIF: Easy REF: 1.1 TOP: I.A | I.B s s ss ss



MSC: s s Remembering

2. Analysis of DNA sequences reveals:
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a. the ancient convergence of two cell types, i.e., prokaryotes and
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eukaryotes
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b. prokaryotes and eukaryotes evolved from a common ancestral cell ss ss ss ss ss ss ss ss


c. that bacteria share common ancestor with archaea, but not with
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eukarya
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d. prokaryotes are cells with a nucleus ss ss ss ss ss


e. the genome of Haemophilus influenzae has about 2 billion base
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pairs
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ANS: s s B DIF: Easy REF: 1.1 TOP: I.A | I.B s s ss ss



MSC: s s Remembering

3. Which of these groups are considered to be microbes but NOT considered to be cells?
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a. viruses d. protists s s s s



b. bacteria e. filamentous fungi ss



c. archaea
ANS: s s A DIF: Easy REF: 1.1 TOP: s s I.A.i
MSC: s s Remembering

4. A microbe is commonly defined as:
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a. a virus that requires a microscope to be seen
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b. a bacterium that requires a microscope to be seen
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c. a single-cellular prokaryote that requires a microscope to
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be seen
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d. a multicellular eukaryote that requires a microscope to be
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seen
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e. a living organism that requires a microscope to be seen
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ANS: s s E DIF: Easy REF: 1.1 TOP: I.A.i | I.A.ii s s ss ss



MSC: s s Remembering

5. Which one of the following statements regarding microbial cells is NOT true?
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a. Microbial cells acquire food, gain energy to build themselves, and
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respond to
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environmental change. ss

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b. Most single-celled organisms require a microscope to render them visible,
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but some
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bacterial cells are large enough to be seen with naked eyes.
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c. Microbes function as individual entities. ss ss ss ss



d. Many microbes form complex multicellular assemblages.
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e. Viruses are not considered as microbial cells.
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ANS: s s C DIF: Easy REF: 1.1 TOP: I.A.i | I.A.ii s s ss ss



MSC: s s Remembering

6. Which of the following statements is FALSE?
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a. A genome is the total genetic information contained in an organism’s
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chromosomal DNA.
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b. If a microbe’s genome includes genes for nitrogenase, that microbe probably can
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fixnitrogen.
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c. By comparing DNA sequences of different organisms, we can figure out how
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closely
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related they are. ss ss


d. Fred Sanger developed the first applicable DNA sequencing method.
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e. Fred Sanger completed the sequences of Haemophilus influenzae.
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ANS: s s E DIF: Easy REF: 1.1 TOP: s s I.B
MSC: s s Remembering

7. The first cellular genomes to be sequenced were those of:
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a. humans d. prions s s s s



b. bacteria e. fungi
c. viruses
ANS: s s B DIF: Easy REF: 1.1 TOP: I.B.i s s



MSC: s s Remembering

8. The environment of early Earth may have contained all of the following EXCEPT:
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a. ferrous iron d. oxygen
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b. methane e. hydrogen gas ss



c. ammonia
ANS: D s s DIF: Easy REF: Special Topic ss ss



1.1TOP: s s s s II.D MSC: Remembering s s




9. The development of the theory of the ―RNA world‖ resulted from the discovery of:
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a. archaea d. ribozymes s s s s



b. prions e. endosymbionts
c. bacteria
ANS: D s s DIF: Medium REF: Special Topic ss ss



1.1TOP: s s s s II.D MSC: Remembering s s




10. Which microbes may resemble those of the earliest life forms?
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a. archaea d. cyanobacteria s s s s



b. photosynthetic algae e. protists ss



c. viruses
ANS: A s s DIF: Medium REF: Special Topic ss ss



1.1TOP: s s s s II.D MSC: Remembering s s




11. Early metabolism may have been catalyzed by:
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a. DNA d. amino acids s s s s ss



b. RNA e. carbohydrates