TEST BANK for Microbiology: An Evolving Science 5th Edition by Slonczewski & Foster; ISBN: 9780393419962, VH 1 TO 5//100% VERIFIED

,
,CHAPTER 1: Microbial Life: Origin and Discovery
QD QD QD QD QD QD




MULTIPLE CHOICE
QD




1. Viruses are: QD




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




b. noncellular particles that take over the metabolism of a cell to generate more viruspar
QD QD QD QD QD QD QD QD QD QD QD QD QD Q
D




ticles
c. pathogens that replicate in complex growth media QD QD QD QD QD QD




d. cellular particles that belong to the archaea domainQD QD QD QD QD QD QD




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




ANS: B DIF:
Q D Easy REF: 1.1 QDQDQ D TOP: I.A | I.B
Q D QD QD




MSC: Remembering Q D




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




a. the ancient convergence of two cell types, i.e., prokaryotes and eukaryotes
QD QD QD QD QD QD QD QD QD QD




b. prokaryotes and eukaryotes evolved from a common ancestral cell QD QD QD QD QD QD QD QD




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




e. the genome of Haemophilus influenzae has about 2 billion base pairs
QD QD QD QD QD QD QD QD QD QD




ANS: B DIF:
Q D Easy REF: 1.1 QDQDQ D TOP: I.A | I.B
Q D QD QD




MSC: Remembering Q D




3. Which of these groups are considered to be microbes but NOT considered to be cells?
QD QD QD QD QD QD QD QD QD QD QD QD QD QD




a. viruses d. protists
b. bacteria e. filamentous fungi QD




c. archaea
ANS: A DIF:
Q D Easy REF: 1.1 QDQDQ D TOP: I.A.i Q D




MSC: Remembering Q D




4. A microbe is commonly defined as:
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a. a virus that requires a microscope to be seen
QD QD QD QD QD QD QD QD




b. a bacterium that requires a microscope to be seen
QD QD QD QD QD QD QD QD




c. a single-cellular prokaryote that requires a microscope to be seen
QD QD QD QD QD QD QD QD QD




d. a multicellular eukaryote that requires a microscope to be seen
QD QD QD QD QD QD QD QD QD




e. a living organism that requires a microscope to be seen
QD QD QD QD QD QD QD QD QD




ANS: E DIF:
Q D Easy REF: 1.1 QDQDQ D TOP: I.A.i | I.A.ii
Q D QD QD




MSC: Remembering Q D




5. Which one of the following statements regarding microbial cells is NOT true?
QD QD QD QD QD QD QD QD QD QD QD




a. Microbial cells acquire food, gain energy to build themselves, and respond to
QD QD QD QD QD QD QD QD QD QD QD




environmental change. QD

, b. Most single-celled organisms require a microscope to render them visible, but some
QD QD QD QD QD QD QD QD QD QD QD




bacterial cells are large enough to be seen with naked eyes.
QD QD QD QD QD QD QD QD QD QD




c. Microbes function as individual entities. QD QD QD QD




d. Many microbes form complex multicellular assemblages.
QD QD QD QD QD




e. Viruses are not considered as microbial cells.
QD QD QD QD QD QD




ANS: C Q DIF:
D Easy REF: 1.1 QDQDQ D TOP: I.A.i | I.A.ii Q D QD QD




MSC: Remembering
Q D




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 fixnitrogen.
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D




c. By comparing DNA sequences of different organisms, we can figure out how closely
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related they are. QD QD




d. Fred Sanger developed the first applicable DNA sequencing method.
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e. Fred Sanger completed the sequences of Haemophilus influenzae.
QD QD QD QD QD QD QD




ANS: E Q DIF:
D Easy REF: 1.1 QDQDQ D TOP: I.B Q D




MSC: Remembering
Q D




7. The first cellular genomes to be sequenced were those of:
QD QD QD QD QD QD QD QD QD




a. humans d. prions
b. bacteria e. fungi
c. viruses
ANS: B Q DIF:
D Easy REF: 1.1 QDQDQ D TOP: I.B.i Q D




MSC: Remembering
Q D




8. The environment of early Earth may have contained all of the following EXCEPT:
QD QD QD QD QD QD QD QD QD QD QD QD




a. ferrous iron QD d. oxygen
b. methane e. hydrogen gas QD




c. ammonia
ANS: D Q D DIF: Easy
REF: Special Topic 1.1TOP:
QD QD QD Q
D Q D II.D
MSC: Remembering Q D




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 Q D DIF: Medium
REF: Special Topic 1.1TOP:
QD QD QD Q
D Q D II.D
MSC: Remembering Q D




10. Which microbes may resemble those of the earliest life forms?
QD QD QD QD QD QD QD QD QD




a. archaea d. cyanobacteria
b. photosynthetic algae e. protists QD




c. viruses
ANS: A Q D DIF: Medium
REF: Special Topic 1.1TOP:
QD QD QD Q
D Q D II.D
MSC: Remembering Q D




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




b. RNA e. carbohydrates