Question 1

Pleomorphic bacteria

Accepted Answer

A)  are flexible. 
B)  reproduce by snapping division. 
C)  vary in size and shape. 
D)  are roughly spherical. 
E)  have a slightly curved rod shape. 
A)  are flexible. 
B)  reproduce by snapping division. 
C)  vary in size and shape. 
D)  are roughly spherical. 
E)  have a slightly curved rod shape.

Question 2

Which of the following statements regarding pseudomonads is FALSE?

Accepted Answer

A)  They cause urinary tract infections. 
B)  They are Gram- negative rods. 
C)  They are symbiotic with plants for nitrogen fixation. 
D)  They include Pseudomonas and Azotobacter. 
E)  They often contaminate food products. 
A)  They cause urinary tract infections. 
B)  They are Gram- negative rods. 
C)  They are symbiotic with plants for nitrogen fixation. 
D)  They include Pseudomonas and Azotobacter. 
E)  They often contaminate food products.

Question 3

Some strains of Staphylococcus aureus can invade the body and cause diseases such as pneumonia and bacteremia.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is NOT associated with bacteria in the genus Streptomyces?

Accepted Answer

A)  microbial antagonism 
B)  antibiotic production 
C)  nutrient recycling in soil 
D)  protection of plants against caterpillars 
E)  the "musty" smell of soil 
A)  microbial antagonism 
B)  antibiotic production 
C)  nutrient recycling in soil 
D)  protection of plants against caterpillars 
E)  the "musty" smell of soil

Question 5

The (bacilli/Lactobacilli/bacteroids) are a group of Gram- negative bacteria that include obligate anaerobes normally found in the intestinal tracts of animals and humans.

Accepted Answer

The answer of The (bacilli/Lactobacilli/bacteroids) are a group of Gram-...

Question 6

Which of the following bacterial genera is used for the degradation of environmental pollutants?

Accepted Answer

A)  Rhizobium 
B)  Streptomyces 
C)  Corynebacterium 
D)  Nocardia 
E)  Actinomyces 
A)  Rhizobium 
B)  Streptomyces 
C)  Corynebacterium 
D)  Nocardia 
E)  Actinomyces

Question 7

Pseudomonas species are occasional causes of

Accepted Answer

A)  food poisoning from dairy products. 
B)  food poisoning from rice. 
C)  food poisoning from contaminated meat. 
D)  urinary tract infections. 
E)  "flesh- eating" bacterial infection. 
A)  food poisoning from dairy products. 
B)  food poisoning from rice. 
C)  food poisoning from contaminated meat. 
D)  urinary tract infections. 
E)  "flesh- eating" bacterial infection.

Question 8

A Gram- positive psychrotrophic rod is a frequent contaminant of milk and meat and an opportunistic pathogen of the immunocompromised.

Accepted Answer

A)  Bacillus thuringiensis 
B)  Listeria monocytogenes 
C)  Clostridium perfringens 
D)  Escherichia coli 
E)  Helicobacter pylori 
A)  Bacillus thuringiensis 
B)  Listeria monocytogenes 
C)  Clostridium perfringens 
D)  Escherichia coli 
E)  Helicobacter pylori

Question 9

Which of the following bacterial genera produce(s) endospores?

Accepted Answer

A)  Lactobacillus 
B)  Bacillus 
C)  Clostridium 
D)  both Bacillus and Lactobacillus 
E)  both Bacillus and Clostridium 
A)  Lactobacillus 
B)  Bacillus 
C)  Clostridium 
D)  both Bacillus and Lactobacillus 
E)  both Bacillus and Clostridium

Question 10

The G + C content is a(n) (RNA/structural/genetic) determination used in classifying the different taxa of Gram- positive bacteria.

Accepted Answer

The answer of The G + C content is a(n)...

Question 11

Slow- growing bacteria in the genus (Mycoplasma/Mycobacterium) are able to withstand long exposure to air because of the presence of mycolic acid in their cell wall structure.

Accepted Answer

The answer of Slow- growing bacteria in the genus (Mycoplasma/Mycobacterium)...

Question 12

Mycoplasmas are pleomorphic because they

Accepted Answer

A)  have sterols in their cytoplasmic membranes. 
B)  exhibit snapping division. 
C)  are low G + C content Gram- positive bacteria. 
D)  produce endospores. 
E)  have no cell walls. 
A)  have sterols in their cytoplasmic membranes. 
B)  exhibit snapping division. 
C)  are low G + C content Gram- positive bacteria. 
D)  produce endospores. 
E)  have no cell walls.

Question 13

The (streptobacilli/actinomycetes/mycoplasmas) are a group of Gram- positive bacteria that form branching filaments resembling those of fungi.

Accepted Answer

The answer of The (streptobacilli/actinomycetes/mycoplasmas) are a group of Gram-...

Question 14

The reduction of nitrogen gas to ammonia is called nitrogen (fixation/cycling).

Accepted Answer

The answer of The reduction of nitrogen gas to ammonia...

Question 15

What feature of mycobacteria is responsible for the unusually slow growth of these bacteria?

Accepted Answer

A)  They have limited numbers of ribosomes so protein production is slow. 
B)  The mycolic acid in their cell walls requires signification metabolic investment. 
C)  They lack a cell wall and are extremely fragile. 
D)  Their low tolerance for oxygen retards their growth. 
E)  They cannot fully metabolize carbohydrates and must rely on fermentation. 
A)  They have limited numbers of ribosomes so protein production is slow. 
B)  The mycolic acid in their cell walls requires signification metabolic investment. 
C)  They lack a cell wall and are extremely fragile. 
D)  Their low tolerance for oxygen retards their growth. 
E)  They cannot fully metabolize carbohydrates and must rely on fermentation.

Question 16

Burkholderia is a common (true/opportunistic) pathogen of patients with cystic fibrosis.

Accepted Answer

The answer of Burkholderia is a common (true/opportunistic) pathogen of...

Question 17

Which of the following bacterial genera is useful for sewage treatment?

Accepted Answer

A)  Thiobacillus 
B)  Burkholderia 
C)  Nitrosomonas 
D)  Neisseria 
E)  Zoogloea 
A)  Thiobacillus 
B)  Burkholderia 
C)  Nitrosomonas 
D)  Neisseria 
E)  Zoogloea

Question 18

The rod- shaped (rickettsias/chlamydias/brucella) are intracellular parasitic members of the alphaproteobacteria.

Accepted Answer

The answer of The rod- shaped (rickettsias/chlamydias/brucella) are intracellular parasitic...

Question 19

Prokaryotes of the genus Pyrodictium are

Accepted Answer

A)  thermophiles. 
B)  intracellular parasites. 
C)  halophiles. 
D)  endospore formers. 
E)  members of the deeply branching bacteria. 
A)  thermophiles. 
B)  intracellular parasites. 
C)  halophiles. 
D)  endospore formers. 
E)  members of the deeply branching bacteria.

Question 20

The most common form of reproduction among prokaryotes is (snapping/budding/binary) fission.

Accepted Answer

The answer of The most common form of reproduction among...

Exam 11: Characterizing and Classifying Prokaryotes

Pleomorphic bacteria

Which of the following statements regarding pseudomonads is FALSE?

Some strains of Staphylococcus aureus can invade the body and cause diseases such as pneumonia and bacteremia.

Which of the following is NOT associated with bacteria in the genus Streptomyces?

The (bacilli/Lactobacilli/bacteroids) are a group of Gram- negative bacteria that include obligate anaerobes normally found in the intestinal tracts of animals and humans.

Which of the following bacterial genera is used for the degradation of environmental pollutants?

Pseudomonas species are occasional causes of

A Gram- positive psychrotrophic rod is a frequent contaminant of milk and meat and an opportunistic pathogen of the immunocompromised.

Which of the following bacterial genera produce(s) endospores?

The G + C content is a(n) (RNA/structural/genetic) determination used in classifying the different taxa of Gram- positive bacteria.

Slow- growing bacteria in the genus (Mycoplasma/Mycobacterium) are able to withstand long exposure to air because of the presence of mycolic acid in their cell wall structure.

Mycoplasmas are pleomorphic because they

The (streptobacilli/actinomycetes/mycoplasmas) are a group of Gram- positive bacteria that form branching filaments resembling those of fungi.

The reduction of nitrogen gas to ammonia is called nitrogen (fixation/cycling).

What feature of mycobacteria is responsible for the unusually slow growth of these bacteria?

Burkholderia is a common (true/opportunistic) pathogen of patients with cystic fibrosis.

Which of the following bacterial genera is useful for sewage treatment?

The rod- shaped (rickettsias/chlamydias/brucella) are intracellular parasitic members of the alphaproteobacteria.

Prokaryotes of the genus Pyrodictium are

The most common form of reproduction among prokaryotes is (snapping/budding/binary) fission.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Disease, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic Dna Viruses

Pathogenic Rna Viruses

Applied and Environmental Microbiology

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