TEST BANK for Microbiology: An Evolving Science 5th Edition by Slonczewski & Foster; ISBN:9780393419962, All 28 Chapters Covered, Verified Latest Edition TEST BANK for Microbiology: An Evolving Science 5th Edition by Slonczewski & Foster; ISBN:9780393419962, All 28 Chapters Covered, Verified Latest...
,
,CHAPTER 1: Microbial Life: Origin and Discovery
gn gn gn gn gn gn
MULTIPLE CHOICE
gn
1. Viruses are: gn
a. infectious agents that infect multi-cellular organisms gn gn gn gn gn
b. noncellular particles that take over the metabolism of a cell to generate more viruspartic
gn gn gn gn gn gn gn gn gn gn gn gn gn ng
les
c. pathogens that replicate in complex growth media gn gn gn gn gn gn
d. cellular particles that belong to the archaea domain gn gn gn gn gn gn gn
e. microbes that consist of lipid membrane enclosed genomes gn gn gn gn gn gn gn
ANS: B gDIF: n Easy REF: 1.1 gngngn TOP: I.A | I.B g n gn gn
MSC: Rememberingg n
2. Analysis of DNA sequences reveals: gn gn gn gn
a. the ancient convergence of two cell types, i.e., prokaryotes and eukaryotes
gn gn gn gn gn gn gn gn gn gn
b. prokaryotes and eukaryotes evolved from a common ancestral cell gn gn gn gn gn gn gn gn
c. that bacteria share common ancestor with archaea, but not with eukarya
gn gn gn gn gn gn gn gn gn gn
d. prokaryotes are cells with a nucleus gn gn gn gn gn
e. the genome of Haemophilus influenzae has about 2 billion base pairs
gn gn gn gn gn gn gn gn gn gn
ANS: B gDIF: n Easy REF: 1.1 gngngn TOP: I.A | I.B g n gn gn
MSC: Rememberingg n
3. Which of these groups are considered to be microbes but NOT considered to be cells?
gn gn gn gn gn gn gn gn gn gn gn gn gn gn
a. viruses d. protists
b. bacteria e. filamentous fungi gn
c. archaea
ANS: A gDIF: n Easy REF: 1.1 gngngn TOP: I.A.i g n
MSC: Rememberingg n
4. A microbe is commonly defined as:
gn gn gn gn gn
a. a virus that requires a microscope to be seen
gn gn gn gn gn gn gn gn
b. a bacterium that requires a microscope to be seen
gn gn gn gn gn gn gn gn
c. a single-cellular prokaryote that requires a microscope to be seen
gn gn gn gn gn gn gn gn gn
d. a multicellular eukaryote that requires a microscope to be seen
gn gn gn gn gn gn gn gn gn
e. a living organism that requires a microscope to be seen
gn gn gn gn gn gn gn gn gn
ANS: E gDIF: n Easy REF: 1.1 gngngn TOP: I.A.i | I.A.ii
g n gn gn
MSC: Rememberingg n
5. Which one of the following statements regarding microbial cells is NOT true?
gn gn gn gn gn gn gn gn gn gn gn
a. Microbial cells acquire food, gain energy to build themselves, and respond to
gn gn gn gn gn gn gn gn gn gn gn
environmental change. gn
, b. Most single-celled organisms require a microscope to render them visible, but some
gn gn gn gn gn gn gn gn gn gn gn
bacterial cells are large enough to be seen with naked eyes.gn gn gn gn gn gn gn gn gn gn
c. Microbes function as individual entities. gn gn gn gn
d. Many microbes form complex multicellular assemblages.
gn gn gn gn gn
e. Viruses are not considered as microbial cells.
gn gn gn gn gn gn
ANS: C g DIF: n Easy REF: 1.1 gngngn TOP: I.A.i | I.A.ii g n gn gn
MSC: Remembering
g n
6. Which of the following statements is FALSE?
gn gn gn gn gn gn
a. A genome is the total genetic information contained in an organism’s chromosomal DNA.
gn gn gn gn gn gn gn gn gn gn gn gn
b. If a microbe’s genome includes genes for nitrogenase, that microbe probably can fixnitrogen.
gn gn gn gn gn gn gn gn gn gn gn gn ng
c. By comparing DNA sequences of different organisms, we can figure out how closely
gn gn gn gn gn gn gn gn gn gn gn gn
related they are. gn gn
d. Fred Sanger developed the first applicable DNA sequencing method.
gn gn gn gn gn gn gn gn
e. Fred Sanger completed the sequences of Haemophilus influenzae.
gn gn gn gn gn gn gn
ANS: E g DIF: n Easy REF: 1.1 gngngn TOP: I.B g n
MSC: Remembering
g n
7. The first cellular genomes to be sequenced were those of:
gn gn gn gn gn gn gn gn gn
a. humans d. prions
b. bacteria e. fungi
c. viruses
ANS: B g DIF: n Easy REF: 1.1 gngngn TOP: I.B.i g n
MSC: Remembering
g n
8. The environment of early Earth may have contained all of the following EXCEPT:
gn gn gn gn gn gn gn gn gn gn gn gn
a. ferrous iron d. oxygen
gn
b. methane e. hydrogen gas gn
c. ammonia
ANS: D g n DIF: Easy
REF: Special Topic 1.1TOP:
gn gn gn ng g n II.D
MSC: Remembering g n
9. The development of the theory of the ―RNA world‖ resulted from the discovery of:
gn gn gn gn gn gn gn gn gn gn gn gn gn
a. archaea d. ribozymes
b. prions e. endosymbionts
c. bacteria
ANS: D g n DIF: Medium
REF: Special Topic 1.1TOP:
gn gn gn ng g n II.D
MSC: Remembering g n
10. Which microbes may resemble those of the earliest life forms?
gn gn gn gn gn gn gn gn gn
a. archaea d. cyanobacteria
b. photosynthetic algae e. protists gn
c. viruses
ANS: A g n DIF: Medium
REF: Special Topic 1.1TOP:
gn gn gn ng g n II.D
MSC: Remembering g n
11. Early metabolism may have been catalyzed by:
gn gn gn gn gn gn
a. DNA d. amino acids gn
b. RNA e. carbohydrates
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