Microbiology: An Evolving Science Test Bank 5th Edition | Slonczewski, Foster & Zinser

TEST BANK
Microbiology: An Evolving Science
JOAN L. SLONCZEWSKI, JOHN W. FOSTER, ERIK R. ZINSER
5th Edition

,
,CHAPTER 1: Microbial Life: Origin and Discovery


MULTIPLE CHOICE

1. Viruses are:
a. infectious agents that infect multi-cellular organisms
b. noncellular particles that take over the metabolism of a cell to generate
more virus particles
c. pathogens that replicate in complex growth media
d. cellular particles that belong to the archaea domain
e. microbes that consist of lipid membrane enclosed genomes

ANS: B DIF: Easy REF: 1.1 TOP: I.A | I.B
MSC: Remembering

2. Analysis of DNA sequences reveals:
a. the ancient convergence of two cell types, i.e., prokaryotes and
eukaryotes
b. prokaryotes and eukaryotes evolved from a common ancestral cell
c. that bacteria share common ancestor with archaea, but not with
eukarya
d. prokaryotes are cells with a nucleus
e. the genome of Haemophilus influenzae has about 2 billion base
pairs

ANS: B DIF: Easy REF: 1.1 TOP: I.A | I.B
MSC: Remembering

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

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

4. A microbe is commonly defined as:
a. a virus that requires a microscope to be seen
b. a bacterium that requires a microscope to be seen
c. a single-cellular prokaryote that requires a microscope to
be seen
d. a multicellular eukaryote that requires a microscope to be
seen
e. a living organism that requires a microscope to be seen

ANS: E DIF: Easy REF: 1.1 TOP: I.A.i | I.A.ii
MSC: Remembering

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

, b. Most single-celled organisms require a microscope to render them visible,
but some
bacterial cells are large enough to be seen with naked eyes.
c. Microbes function as individual entities.
d. Many microbes form complex multicellular assemblages.
e. Viruses are not considered as microbial cells.
ANS: C DIF: Easy REF: 1.1 TOP: I.A.i | I.A.ii
MSC: Remembering

6. Which of the following statements is FALSE?
a. A genome is the total genetic information contained in an organism’s
chromosomal DNA.
b. If a microbe’s genome includes genes for nitrogenase, that microbe probably
can fix nitrogen.
c. By comparing DNA sequences of different organisms, we can figure out how
closely
related they are.
d. Fred Sanger developed the first applicable DNA sequencing method.
e. Fred Sanger completed the sequences of Haemophilus influenzae.

ANS: E DIF: Easy REF: 1.1 TOP: I.B
MSC: Remembering

7. The first cellular genomes to be sequenced were those of:
a. humans d. prions
b. bacteria e. fungi
c. viruses

ANS: B DIF: Easy REF: 1.1 TOP: I.B.i
MSC: Remembering

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

ANS: D DIF: Easy REF: Special Topic
1.1 TOP: II.D MSC: Remembering

9. The development of the theory of the ―RNA world‖ resulted from the discovery of:
a. archaea d. ribozymes
b. prions e. endosymbionts
c. bacteria

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

10. Which microbes may resemble those of the earliest life forms?
a. archaea d. cyanobacteria
b. photosynthetic algae e. protists
c. viruses

ANS: A DIF: Medium REF: Special Topic
1.1 TOP: II.D MSC: Remembering

11. Early metabolism may have been catalyzed by:
a. DNA d. amino acids
b. RNA e. carbohydrates