Question 1

Agrobacterium species

Accepted Answer

A)  contain the Ti plasmid that modifies the growth of plant tissue. 
B)  produce antibiotics. 
C)  infect animal cells. 
D)  resemble fungus. 
E)  are a group of Gram-negative rod-shaped bacteria that often fix nitrogen. 
A)  contain the Ti plasmid that modifies the growth of plant tissue. 
B)  produce antibiotics. 
C)  infect animal cells. 
D)  resemble fungus. 
E)  are a group of Gram-negative rod-shaped bacteria that often fix nitrogen.

Question 2

Which causes uncontrolled growth of plant tissue, resulting in a tumor?

Accepted Answer

A)  Bacillus anthracis 
B)  Rhizobium 
C)  Yersinia pestis 
D)  Agrobacterium 
E)  Cyanobacteria 
A)  Bacillus anthracis 
B)  Rhizobium 
C)  Yersinia pestis 
D)  Agrobacterium 
E)  Cyanobacteria

Question 3

Comparatively greater energy is released when

Accepted Answer

A)  carbon dioxide is the final electron acceptor. 
B)  hydrogen is the final electron acceptor. 
C)  oxygen is the final electron acceptor. 
D)  nitrate is the final electron acceptor. 
E)  fermentation occurs. 
A)  carbon dioxide is the final electron acceptor. 
B)  hydrogen is the final electron acceptor. 
C)  oxygen is the final electron acceptor. 
D)  nitrate is the final electron acceptor. 
E)  fermentation occurs.

Question 4

The conversion of ammonium to nitrate could be accomplished by the presence of

Accepted Answer

A)  Nitrosomonas alone. 
B)  Nitrobacter alone. 
C)  Anabaena alone. 
D)  Nitrosomonas and Nitrobacter. 
E)  Nitrosomonas, Nitrobacter, and Anabaena. 
A)  Nitrosomonas alone. 
B)  Nitrobacter alone. 
C)  Anabaena alone. 
D)  Nitrosomonas and Nitrobacter. 
E)  Nitrosomonas, Nitrobacter, and Anabaena.

Question 5

The purple sulfur and green sulfur bacteria

Accepted Answer

A)  both use hydrogen sulfide as a source of electrons. 
B)  generate oxygen. 
C)  preferentially use organic molecules as an electron source. 
D)  both lack gas vesicles. 
E)  generate oxygen and lack gas vesicles. 
A)  both use hydrogen sulfide as a source of electrons. 
B)  generate oxygen. 
C)  preferentially use organic molecules as an electron source. 
D)  both lack gas vesicles. 
E)  generate oxygen and lack gas vesicles.

Question 6

Rhizobium species

Accepted Answer

A)  resemble fungi. 
B)  fix nitrogen inside nodules on the roots of legumes. 
C)  produce antibiotics inside nodules on the roots of legumes. 
D)  produce a gall in plants. 
E)  contain the Ti plasmid that modifies the growth of plant tissue. 
A)  resemble fungi. 
B)  fix nitrogen inside nodules on the roots of legumes. 
C)  produce antibiotics inside nodules on the roots of legumes. 
D)  produce a gall in plants. 
E)  contain the Ti plasmid that modifies the growth of plant tissue.

Question 7

Complex structures called fruiting bodies are a characteristic of

Accepted Answer

A)  Clostridia. 
B)  Streptomyces. 
C)  lactic acid bacteria. 
D)  myxobacteria. 
E)  bacilli. 
A)  Clostridia. 
B)  Streptomyces. 
C)  lactic acid bacteria. 
D)  myxobacteria. 
E)  bacilli.

Question 8

Methanogens often grow in association with

Accepted Answer

A)  nitrifying bacteria. 
B)  fermentative bacteria. 
C)  lithotrophic bacteria. 
D)  photosynthetic bacteria. 
E)  pathogenic bacteria. 
A)  nitrifying bacteria. 
B)  fermentative bacteria. 
C)  lithotrophic bacteria. 
D)  photosynthetic bacteria. 
E)  pathogenic bacteria.

Question 9

Please select the False statement regarding sheathed bacteria.

Accepted Answer

A)  The sheath protects the bacteria from predators. 
B)  The sheath allows these bacteria to perform photosynthesis. 
C)  Sheathed bacteria frequently block industrial pipes. 
D)  Sheathed bacteria spread by means of swarmer cells. 
E)  The sheath allows these bacteria to attach to surfaces. 
A)  The sheath protects the bacteria from predators. 
B)  The sheath allows these bacteria to perform photosynthesis. 
C)  Sheathed bacteria frequently block industrial pipes. 
D)  Sheathed bacteria spread by means of swarmer cells. 
E)  The sheath allows these bacteria to attach to surfaces.

Question 10

Which of the following colonize the vagina during childbearing years?

Accepted Answer

A)  Clostridium 
B)  Streptococci 
C)  Enterobacter 
D)  Lactobacilli 
E)  Clostridium AND lactobacilli 
A)  Clostridium 
B)  Streptococci 
C)  Enterobacter 
D)  Lactobacilli 
E)  Clostridium AND lactobacilli

Question 11

Cyanobacteria

Accepted Answer

A)  are a form of algae. 
B)  are prokaryotes. 
C)  use hydrogen sulfide as an electron source. 
D)  are eukaryotes. 
E)  contribute to global CO₂ buildup. 
A)  are a form of algae. 
B)  are prokaryotes. 
C)  use hydrogen sulfide as an electron source. 
D)  are eukaryotes. 
E)  contribute to global CO₂ buildup.

Question 12

Propionibacterium

Accepted Answer

A)  produces propionic acid AND is responsible for the holes in Swiss cheese. 
B)  produces propionic acid AND requires aerobic environments. 
C)  produces lactic acid AND is responsible for the holes in Swiss cheese. 
D)  is responsible for the holes in Swiss cheese AND requires aerobic environments. 
E)  produces lactic acid AND is a Gram-negative organism. 
A)  produces propionic acid AND is responsible for the holes in Swiss cheese. 
B)  produces propionic acid AND requires aerobic environments. 
C)  produces lactic acid AND is responsible for the holes in Swiss cheese. 
D)  is responsible for the holes in Swiss cheese AND requires aerobic environments. 
E)  produces lactic acid AND is a Gram-negative organism.

Question 13

Purple sulfur bacteria and filamentous sulfur-oxidizers both

Accepted Answer

A)  accumulate sulfur as intracellular granules. 
B)  fix nitrogen. 
C)  produce oxygen from carbon dioxide. 
D)  use gliding motility. 
E)  have gas vesicles. 
A)  accumulate sulfur as intracellular granules. 
B)  fix nitrogen. 
C)  produce oxygen from carbon dioxide. 
D)  use gliding motility. 
E)  have gas vesicles.

Question 14

Relatively little is known about many obligate anaerobes. Why might this be so?

Accepted Answer

A)  There are far more obligate aerobes in any environment, so it is much easier to study them. 
B)  It is difficult to provide the right atmospheric environment to cultivate obligate anaerobes, so it's been harder to study them. 
C)  Only obligate aerobes cause disease, so we have had little reason to study obligate anaerobes. 
D)  The majority of obligate anaerobes are very nutritionally fastidious, which makes it difficult to study them. 
E)  It is difficult to provide the right temperature to cultivate obligate anaerobes, so it's been harder to study them. 
A)  There are far more obligate aerobes in any environment, so it is much easier to study them. 
B)  It is difficult to provide the right atmospheric environment to cultivate obligate anaerobes, so it's been harder to study them. 
C)  Only obligate aerobes cause disease, so we have had little reason to study obligate anaerobes. 
D)  The majority of obligate anaerobes are very nutritionally fastidious, which makes it difficult to study them. 
E)  It is difficult to provide the right temperature to cultivate obligate anaerobes, so it's been harder to study them.

Question 15

Which of the following are spirochetes?

Accepted Answer

A)  Borrelia AND Treponema 
B)  Clostridium AND Borrelia 
C)  Leptospira AND Escherichia 
D)  Treponema AND Bacillus 
E)  Escherichia AND Neisseria 
A)  Borrelia AND Treponema 
B)  Clostridium AND Borrelia 
C)  Leptospira AND Escherichia 
D)  Treponema AND Bacillus 
E)  Escherichia AND Neisseria

Question 16

Sulfolobus species are found at the surface of acidic sulfur-containing hot springs such as many of those found in Yellowstone National Park. They only grow at temperatures above 50°C and at a pH between 1 and 6. How would you classify these organisms?

Accepted Answer

A)  Anaerobic, acidophilic mesophiles 
B)  Aerobic, acidophilic thermophiles 
C)  Microaerophilic, halotolerant basophiles 
D)  Aerobic, psychrophilic acidophiles 
E)  Psychrotrophic neutrophiles 
A)  Anaerobic, acidophilic mesophiles 
B)  Aerobic, acidophilic thermophiles 
C)  Microaerophilic, halotolerant basophiles 
D)  Aerobic, psychrophilic acidophiles 
E)  Psychrotrophic neutrophiles

Question 17

Luminescence

Accepted Answer

A)  is catalyzed by luciferase. 
B)  may be controlled by quorum sensing. 
C)  may be produced by bacteria. 
D)  All of the choices are correct. 
E)  None of the choices is correct. 
A)  is catalyzed by luciferase. 
B)  may be controlled by quorum sensing. 
C)  may be produced by bacteria. 
D)  All of the choices are correct. 
E)  None of the choices is correct.

Question 18

The skin and oral cavity may have anaerobic microenvironments.

Accepted Answer

A) True 
 B)False

Question 19

Wolbachia are found only in

Accepted Answer

A)  hot springs. 
B)  plants. 
C)  mammals. 
D)  arthropods. 
E)  marine water. 
A)  hot springs. 
B)  plants. 
C)  mammals. 
D)  arthropods. 
E)  marine water.

Question 20

Which of the following statements about members of the family Enterobacteriaceae is NOT True?

Accepted Answer

A)  It includes E. coli, Enterobacter, Salmonella, and Shigella. 
B)  It includes many medically relevant bacteria. 
C)  Members only reside in the intestinal tract of humans. 
D)  Members are facultative anaerobes. 
E)  All of the choices are correct. 
A)  It includes E. coli, Enterobacter, Salmonella, and Shigella. 
B)  It includes many medically relevant bacteria. 
C)  Members only reside in the intestinal tract of humans. 
D)  Members are facultative anaerobes. 
E)  All of the choices are correct.

Exam 11: The Diversity of Bacteria and Archaea

Agrobacterium species

Which causes uncontrolled growth of plant tissue, resulting in a tumor?

Comparatively greater energy is released when

The conversion of ammonium to nitrate could be accomplished by the presence of

The purple sulfur and green sulfur bacteria

Rhizobium species

Complex structures called fruiting bodies are a characteristic of

Methanogens often grow in association with

Please select the False statement regarding sheathed bacteria.

Which of the following colonize the vagina during childbearing years?

Cyanobacteria

Propionibacterium

Purple sulfur bacteria and filamentous sulfur-oxidizers both

Relatively little is known about many obligate anaerobes. Why might this be so?

Which of the following are spirochetes?

Sulfolobus species are found at the surface of acidic sulfur-containing hot springs such as many of those found in Yellowstone National Park. They only grow at temperatures above 50°C and at a pH between 1 and 6. How would you classify these organisms?

Luminescence

The skin and oral cavity may have anaerobic microenvironments.

Wolbachia are found only in

Which of the following statements about members of the family Enterobacteriaceae is NOT True?

Humans and the Microbial World

The Molecules of Life

Microscopy and Cell Structure

Dynamics of Microbial Growth

Control of Microbial Growth

Microbial Metabolism: Fueling Cell Growth

The Blueprint of Life, from DNA to Protein

Bacterial Genetics

Biotechnology

Identifying and Classifying Microorganisms

The Eukaryotic Members of the Microbial World

Viruses, Viroids, and Prions

The Innate Immune Response

The Adaptive Immune Response

Host-Microbe Interactions

Immunological Disorders

Applications of Immune Responses

Epidemiology

Antimicrobial Medications

Respiratory System Infections

Skin Infections

Wound Infections

Digestive System Infections

Blood and Lymphatic Infections

Nervous System Infections

Genitourinary Tract Infections

Microbial Ecology

Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

Food Microbiology

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