Question 1

A major function of prokaryotic gas vesicles is

Accepted Answer

A)  to keep the cell's organelles separated during flagellar motion. 
B)  to serve as a reservoir for oxygen and carbon dioxide. 
C)  to confer buoyancy on cells by decreasing their density. 
D)  none of the above. 
A)  to keep the cell's organelles separated during flagellar motion. 
B)  to serve as a reservoir for oxygen and carbon dioxide. 
C)  to confer buoyancy on cells by decreasing their density. 
D)  none of the above.

Question 2

The proton motive force helps drive cellular functions that require energy by maintaining a positively charged side of the cell and the other negatively charged.

Accepted Answer

A) True 
 B)False

Question 3

In gram- positive Bacteria, the cell wall may be up to _______peptidoglycan.

Accepted Answer

A)  72% 
B)  25% 
C)  90% 
D)  48% 
A)  72% 
B)  25% 
C)  90% 
D)  48%

Question 4

Describe the growth of a flagellum.

Accepted Answer

The order of synthesis and formation sho

Question 5

Explain the differences between uniporters, symporters, and antiporters.

Accepted Answer

Answers should highl

Question 6

Hydrolytic enzymes function in the

Accepted Answer

A)  chemotactic response, particularly in gram- negative Bacteria. 
B)  regeneration of the periplasm. 
C)  transport of substrates within the cell. 
D)  initial degradation of nutrients. 
A)  chemotactic response, particularly in gram- negative Bacteria. 
B)  regeneration of the periplasm. 
C)  transport of substrates within the cell. 
D)  initial degradation of nutrients.

Question 7

The cytoplasmic membrane could best be described as

Accepted Answer

A)  a passive conduit for intracellular transport. 
B)  an impermeable barrier. 
C)  a highly selective permeability barrier. 
D)  slightly permeable to water but impermeable to metabolic solutes. 
A)  a passive conduit for intracellular transport. 
B)  an impermeable barrier. 
C)  a highly selective permeability barrier. 
D)  slightly permeable to water but impermeable to metabolic solutes.

Question 8

Which statement is TRUE?

Accepted Answer

A)  The phosphotransferase system has nothing to do with group translocation. 
B)  The phosphotransferase system is synonymous with group translocation. 
C)  The phosphotransferase system is a type of group translocation. 
D)  Group translocation is a part of the phosphotransferase system. 
A)  The phosphotransferase system has nothing to do with group translocation. 
B)  The phosphotransferase system is synonymous with group translocation. 
C)  The phosphotransferase system is a type of group translocation. 
D)  Group translocation is a part of the phosphotransferase system.

Question 9

Glycogen granules

Accepted Answer

A)  cannot be detected by light microscopy, even if iodine is added. 
B)  function as storage depots for carbon and energy. 
C)  are derived directly from either PHB or PHA. 
D)  None of the above applies to glycogen granules. 
A)  cannot be detected by light microscopy, even if iodine is added. 
B)  function as storage depots for carbon and energy. 
C)  are derived directly from either PHB or PHA. 
D)  None of the above applies to glycogen granules.

Question 10

A phototrophic bacterium swims outside the illuminated field of view of the microscope, reverses direction, and scurries back into the lighted area. This is an example of_______.

Accepted Answer

The answer of A phototrophic bacterium swims outside the illuminated...

Question 11

Aquaporins are

Accepted Answer

A)  molecules that prevent water from crossing a membrane. 
B)  cations bound to water molecules. 
C)  water transport proteins. 
D)  enzymes involved in the generation of water within cells. 
A)  molecules that prevent water from crossing a membrane. 
B)  cations bound to water molecules. 
C)  water transport proteins. 
D)  enzymes involved in the generation of water within cells.

Question 12

Although the inner leaflet of the gram- negative outer membrane contains phospholipids, the outer leaflet of the outer membrane contains

Accepted Answer

A)  lipopolysaccharide (LPS). 
B)  pseudopeptidoglycan. 
C)  poly- fi- hydroxybutyric acid (PH
B) . 
D)  lipoteichoic acids. 
A)  lipopolysaccharide (LPS). 
B)  pseudopeptidoglycan. 
C)  poly- fi- hydroxybutyric acid (PH
B) . 
D)  lipoteichoic acids.

Question 13

The tetraether molecule within the membrane structure of the _______yields a lipid_______ .

Accepted Answer

A)  Archaea / bilayer 
B)  Bacteria / monolayer 
C)  Archaea / monolayer 
D)  Bacteria / bilayer 
A)  Archaea / bilayer 
B)  Bacteria / monolayer 
C)  Archaea / monolayer 
D)  Bacteria / bilayer

Question 14

Bacteria with appendages

Accepted Answer

A)  have filaments that are commonly called appendages. 
B)  have the basic characteristics of eukaryotic cells. 
C)  possess tubular or stalk- like extensions of their cells. 
D)  do not exist. 
A)  have filaments that are commonly called appendages. 
B)  have the basic characteristics of eukaryotic cells. 
C)  possess tubular or stalk- like extensions of their cells. 
D)  do not exist.

Question 15

Carrier- mediated transport is necessary when

Accepted Answer

A)  the level of nutrients in nature is very low. 
B)  diffusion will not allow adequate amounts of a substance to enter the cell. 
C)  movement into the cell is against a concentration gradient. 
D)  All of the above are true. 
A)  the level of nutrients in nature is very low. 
B)  diffusion will not allow adequate amounts of a substance to enter the cell. 
C)  movement into the cell is against a concentration gradient. 
D)  All of the above are true.

Question 16

Twitching motility is an unusual form of motility in some bacteria that is a result of a class of surface structures known as _______.

Accepted Answer

The answer of Twitching motility is an unusual form of...

Question 17

The peptide interbridge crosslinking is found ONLY in the cell walls of _______Bacteria.

Accepted Answer

The answer of The peptide interbridge crosslinking is found ONLY...

Question 18

Compare and contrast a capsule and a slime layer in terms of composition, organization, and function.

Accepted Answer

The answer of Compare and contrast a capsule and a...

Question 19

Small acid- soluble proteins (SASPs) are found in high numbers within the core of_______, which help to protect DNA from_______ . They also serve as a(n)_______source during outgrowth.

Accepted Answer

endospores / desicca

Question 20

Some membrane proteins are involved in bioenergetic reactions, while others are involved in membrane transport.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function in Bacteria and Archaea

A major function of prokaryotic gas vesicles is

The proton motive force helps drive cellular functions that require energy by maintaining a positively charged side of the cell and the other negatively charged.

In gram- positive Bacteria, the cell wall may be up to _______peptidoglycan.

Describe the growth of a flagellum.

Explain the differences between uniporters, symporters, and antiporters.

Hydrolytic enzymes function in the

The cytoplasmic membrane could best be described as

Which statement is TRUE?

Glycogen granules

A phototrophic bacterium swims outside the illuminated field of view of the microscope, reverses direction, and scurries back into the lighted area. This is an example of_______.

Aquaporins are

Although the inner leaflet of the gram- negative outer membrane contains phospholipids, the outer leaflet of the outer membrane contains

The tetraether molecule within the membrane structure of the _______yields a lipid_______ .

Bacteria with appendages

Carrier- mediated transport is necessary when

Twitching motility is an unusual form of motility in some bacteria that is a result of a class of surface structures known as _______.

The peptide interbridge crosslinking is found ONLY in the cell walls of _______Bacteria.

Compare and contrast a capsule and a slime layer in terms of composition, organization, and function.

Small acid- soluble proteins (SASPs) are found in high numbers within the core of_______, which help to protect DNA from_______ . They also serve as a(n)_______source during outgrowth.

Some membrane proteins are involved in bioenergetic reactions, while others are involved in membrane transport.

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Nutrition, Culture, and Metabolism of Microorganisms

Microbial Growth

Molecular Biology of Bacteria

Archael and Eukaryotic Molecular Biology

Regulation of Gene Expression

Viruses and Virology

Genetics of Bacteria and Arachaea

Genetic Engineering

Microbial Genomics

Phototrophy, Chemolithotrophy, and Major Biosyntheses

Catabolism of Organic Compounds

Commercial Products and Biotechnology

Microbial Evolution and Systematics

Bacteria: the Proteobacteria

Other Bacteria

Archaea

Eukaryotic Cell Biology and Eukaryotic Microorganisms

Viral Diversity

Methods in Microbial Ecology

Major Microbial Habitats and Diversity

Nutrient Cycles, Biodegradation, and Bioremediation

Microbial Symbioses

Microbial Growth Control

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology and Immunology

Epidemiology

Person-To-Person Microbial Diseases

Vectorborne and Soilborne Microbial Pathogens

Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

Food Preservation and Foodborne Microbial Diseases

Filters

The tetraether molecule within the membrane structure of the _yields a lipid_ .

Small acid- soluble proteins (SASPs) are found in high numbers within the core of___, which help to protect DNA from_ . They also serve as a(n)_____source during outgrowth.