Brock Biology of Microorganisms Chapter 2
Exam Questions With Correct Answers
An organism of the genus Staphylococcus is ________, while an
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organism of the genus Spirochaeta is ________.
| | | | | |
A) spherical / rod shaped
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B) rod shaped / coiled
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C) spherical / coiled
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D) coiled / spherical - CORRECT ANSWER✔✔-C) spherical/coiled
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Bacteria with type IV pili
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A) possess tubular or stalk-like extensions of their cells.
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B) likely exhibit twitching motility.
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C) have capsules that promote dehydration.
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D) live in aquatic environments. - CORRECT ANSWER✔✔-B) likely exhibit
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twitching motility.
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The terms "run" and "tumble" are generally associated with
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A) eukaryotic cells.
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B) nutrient transport.
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C) chemotaxis.
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,D) clustering of certain rod-shaped bacteria. - CORRECT ANSWER✔✔-C)
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chemotaxis.
The morphology of a cell influences its
| | | | | |
A) motility.
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B) metabolism.
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C) surface-to-volume ratio.
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D) motility and surface-to-volume ratio. - CORRECT ANSWER✔✔-D)
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motility and surface-to-volume ratio.
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Compared to Eukaryotes, Bacteria and Archaea have ________ surface-
| | | | | | | |
to-volume ratios, causing ________ nutrient exchange and growth
| | | | | | | |
rates.
A) lower / lower
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B) lower / higher
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C) higher / lower
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D) higher / higher - CORRECT ANSWER✔✔-D) higher/higher
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The cytoplasmic membrane could best be described as
| | | | | | |
A) an impermeable barrier.
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B) a passive conduit for intracellular transport.
| | | | | |
C) a highly selective permeability barrier.
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, D) a rigid structure that protects the cell. - CORRECT ANSWER✔✔-C) a
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highly selective permeability barrier.
| | |
The use of the Gram stain in microbiology is important because it
| | | | | | | | | | | |
differentiates
A) Bacteria from Archaea.
| | |
B) prokaryotic from eukaryotic cells.
| | | |
C) bacterial cells with different types of cell walls.
| | | | | | | | |
D) archaeal cells with different types of metabolism. - CORRECT
| | | | | | | | | |
ANSWER✔✔-C) bacterial cells with different types of cell walls.
| | | | | | | |
Some archaea have unique phospholipids in their cytoplasmic
| | | | | | | |
membrane that | |
A) form a monolayer due to the presence of diglycerol tetraethers.
| | | | | | | | | |
B) form a bilayer due to the presence of sterols.
| | | | | | | | |
C) form a stable ring structure due to the presence of crenarchaeol.
| | | | | | | | | | |
D) form a bilayer due to the presence of phosphatidylethanolamine. -
| | | | | | | | | | |
CORRECT ANSWER✔✔-A) form a monolayer due to the presence of
| | | | | | | | | |
diglycerol tetraethers. |
Carrier-mediated transport is necessary when | | | |
A) diffusion will not allow adequate amounts of a substance to enter the
| | | | | | | | | | | |
cell.
|
Exam Questions With Correct Answers
An organism of the genus Staphylococcus is ________, while an
| | | | | | | | | |
organism of the genus Spirochaeta is ________.
| | | | | |
A) spherical / rod shaped
| | | |
B) rod shaped / coiled
| | | |
C) spherical / coiled
| | |
D) coiled / spherical - CORRECT ANSWER✔✔-C) spherical/coiled
| | | | | | |
Bacteria with type IV pili
| | | |
A) possess tubular or stalk-like extensions of their cells.
| | | | | | | |
B) likely exhibit twitching motility.
| | | |
C) have capsules that promote dehydration.
| | | | |
D) live in aquatic environments. - CORRECT ANSWER✔✔-B) likely exhibit
| | | | | | | | |
twitching motility.
| |
The terms "run" and "tumble" are generally associated with
| | | | | | | |
A) eukaryotic cells.
| |
B) nutrient transport.
| |
C) chemotaxis.
|
,D) clustering of certain rod-shaped bacteria. - CORRECT ANSWER✔✔-C)
| | | | | | | | |
chemotaxis.
The morphology of a cell influences its
| | | | | |
A) motility.
|
B) metabolism.
|
C) surface-to-volume ratio.
| |
D) motility and surface-to-volume ratio. - CORRECT ANSWER✔✔-D)
| | | | | | | |
motility and surface-to-volume ratio.
| | |
Compared to Eukaryotes, Bacteria and Archaea have ________ surface-
| | | | | | | |
to-volume ratios, causing ________ nutrient exchange and growth
| | | | | | | |
rates.
A) lower / lower
| | |
B) lower / higher
| | |
C) higher / lower
| | |
D) higher / higher - CORRECT ANSWER✔✔-D) higher/higher
| | | | | | |
The cytoplasmic membrane could best be described as
| | | | | | |
A) an impermeable barrier.
| | |
B) a passive conduit for intracellular transport.
| | | | | |
C) a highly selective permeability barrier.
| | | | |
, D) a rigid structure that protects the cell. - CORRECT ANSWER✔✔-C) a
| | | | | | | | | | | |
highly selective permeability barrier.
| | |
The use of the Gram stain in microbiology is important because it
| | | | | | | | | | | |
differentiates
A) Bacteria from Archaea.
| | |
B) prokaryotic from eukaryotic cells.
| | | |
C) bacterial cells with different types of cell walls.
| | | | | | | | |
D) archaeal cells with different types of metabolism. - CORRECT
| | | | | | | | | |
ANSWER✔✔-C) bacterial cells with different types of cell walls.
| | | | | | | |
Some archaea have unique phospholipids in their cytoplasmic
| | | | | | | |
membrane that | |
A) form a monolayer due to the presence of diglycerol tetraethers.
| | | | | | | | | |
B) form a bilayer due to the presence of sterols.
| | | | | | | | |
C) form a stable ring structure due to the presence of crenarchaeol.
| | | | | | | | | | |
D) form a bilayer due to the presence of phosphatidylethanolamine. -
| | | | | | | | | | |
CORRECT ANSWER✔✔-A) form a monolayer due to the presence of
| | | | | | | | | |
diglycerol tetraethers. |
Carrier-mediated transport is necessary when | | | |
A) diffusion will not allow adequate amounts of a substance to enter the
| | | | | | | | | | | |
cell.
|
