TEST BANK Microbiology An Evolving Science, 5th Edition, John Foster & Joan Slonczewski- All Chapters 1 - 28

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TEST BANK ss




Microbiology An Evolving Science, 5th Edition,
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John Foster & Joan Slonczewski, All Chapter 1 - 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 generate more
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virus particles
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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 ss ss ss ss ss ss ss



e. microbes that consist of lipid membrane enclosed genomes ss ss ss ss ss ss ss




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



MSC: Remembering ss




2. Analysis of DNA sequences reveals: ss ss ss ss



a. the ancient convergence of two cell types, i.e., prokaryotes and 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 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 pairs
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ANS: B DIF: s s Easy REF: s s 1.1 TOP: I.A |I.B s s ss s



MSC: Remembering ss




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



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



MSC: Remembering ss




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 be seen
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d. a multicellular eukaryote that requires a microscope to be seen
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e. a living organism that requires a microscope to be seen
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ANS: E DIF: s s Easy REF: s s 1.1 TOP: I.A.i | I.A.ii
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MSC: Remembering ss




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 respond
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to environmental change.
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b. Most single-celled organisms require a microscope to render them visible, but
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some 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: C DIF:
s s Easy REF: s s 1.1 TOP: I.A.i | I.A.ii s s ss ss



MSC: Rememberingss




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 chromosomal DNA.
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b. If a microbe’s genome includes genes for nitrogenase, that microbe probably can
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fix nitrogen.
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c. By comparing DNA sequences of different organisms, we can figure out how closely
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related they are.
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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: E DIF:
s s Easy REF: s s 1.1 TOP: I.B s s



MSC: Rememberingss




7. The first cellular genomes to be sequenced were those of:
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a. humans d. prions
b. bacteria e. fungi
c. viruses
ANS: B DIF:
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MSC: Rememberingss I.B.i
s s




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 1.1 ss ss ss


TOP:
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II.D
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9. The development of the theory of the ―RNA world‖ resulted from the discovery of:
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a. archaea d. ribozymes
b. prions e. endosymbionts
c. bacteria
ANS: D s s DIF: Medium REF: Special Topic 1.1ss ss ss


TOP:
ss MSC:
ss



II.D
s s Remembering
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10. Which microbes may resemble those of the earliest life forms?
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a. archaea d. cyanobacteria
b. photosynthetic algae e. protists ss



c. viruses
ANS: A s s DIF: Medium REF: Special Topic 1.1 ss ss ss



TOP: II.D s s MSC: Remembering ss




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



b. RNA e. carbohydrates