Question 1

Most of the methane produced by methanogens is oxidized by other types of bacteria before it affects Earth's climate.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following groups of bacteria is named for its resemblance to fungi?

Accepted Answer

A)  Corynebacterium 
B)  Actinomyces 
C)  Clostridium 
D)  Lactobacillus 
E)  Staphylococcus 
A)  Corynebacterium 
B)  Actinomyces 
C)  Clostridium 
D)  Lactobacillus 
E)  Staphylococcus

Question 3

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-positive...

Question 4

Unusual cellular extensions called prosthecae are associated with which of the following groups of proteobacteria?

Accepted Answer

A)  alphaproteobacteria 
B)  betaproteobacteria 
C)  gammaproteobacteria 
D)  deltaproteobacteria 
E)  epsilonproteobacteria 
A)  alphaproteobacteria 
B)  betaproteobacteria 
C)  gammaproteobacteria 
D)  deltaproteobacteria 
E)  epsilonproteobacteria

Question 5

Bacteria of the Proteobacteria that are intracellular parasites are members of the

Accepted Answer

A)  alphaproteobacteria. 
B)  betaproteobacteria. 
C)  gammaproteobacteria. 
D)  alphaproteobacteria and betaproteobactria. 
E)  alphaproteobacteria and gammaproteobacteria. 
A)  alphaproteobacteria. 
B)  betaproteobacteria. 
C)  gammaproteobacteria. 
D)  alphaproteobacteria and betaproteobactria. 
E)  alphaproteobacteria and gammaproteobacteria.

Question 6

Which of the following bacteria oxidize nitrite (NO₂⁻) to produce nitrate (NO₃⁻)?

Accepted Answer

A)  Nitrobacter 
B)  Azospirillum 
C)  Nocardia 
D)  Cyanobacter 
E)  Rhizobium 
A)  Nitrobacter 
B)  Azospirillum 
C)  Nocardia 
D)  Cyanobacter 
E)  Rhizobium

Question 7

A Gram-positive psychrotrophic rod ________ is a frequent contaminant of dairy products and meat and survives phagocytosis.

Accepted Answer

A)  Escherichia coli 
B)  Mycobacterium leprae 
C)  Clostridium perfringens 
D)  Bacillus thuringiensis 
E)  Listeria monocytogenes 
A)  Escherichia coli 
B)  Mycobacterium leprae 
C)  Clostridium perfringens 
D)  Bacillus thuringiensis 
E)  Listeria monocytogenes

Question 8

Endospores

Accepted Answer

A)  are bacterial reproductive structures. 
B)  may be produced when nutrients are scarce. 
C)  are produced by bacteria, algae, and fungi. 
D)  are resistant to everything except radiation. 
E)  can last for only about 10 years. 
A)  are bacterial reproductive structures. 
B)  may be produced when nutrients are scarce. 
C)  are produced by bacteria, algae, and fungi. 
D)  are resistant to everything except radiation. 
E)  can last for only about 10 years.

Question 9

Contamination with ________ is a concern because they are highly resistant to killing.

Accepted Answer

A)  archaea 
B)  endospores 
C)  pleomorphs 
D)  vegetative cells 
E)  vibrios 
A)  archaea 
B)  endospores 
C)  pleomorphs 
D)  vegetative cells 
E)  vibrios

Question 10

What does the term "deeply branching bacteria" mean?

Accepted Answer

A)  The bacteria likely branched from other Bacteria very early. 
B)  The bacteria grow in long filaments with frequent branches. 
C)  The bacteria grow in environments far below the surface of the Earth. 
D)  The bacterial cells have a Y or "branched" shape. 
E)  This group of bacteria have ribosomal RNAs very divergent from the rest of the members of the domain Bacteria. 
A)  The bacteria likely branched from other Bacteria very early. 
B)  The bacteria grow in long filaments with frequent branches. 
C)  The bacteria grow in environments far below the surface of the Earth. 
D)  The bacterial cells have a Y or "branched" shape. 
E)  This group of bacteria have ribosomal RNAs very divergent from the rest of the members of the domain Bacteria.

Question 11

Spores known as akinetes are reproductive structures of

Accepted Answer

A)  members of the Bacillus genus. 
B)  members of the genus Mycoplasma. 
C)  members of the proteobacteria. 
D)  members of the Archaea. 
E)  members of the cyanobacteria. 
A)  members of the Bacillus genus. 
B)  members of the genus Mycoplasma. 
C)  members of the proteobacteria. 
D)  members of the Archaea. 
E)  members of the cyanobacteria.

Question 12

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

Accepted Answer

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

Question 13

The classification of prokaryotes in Bergey's Manual of Systematic Bacteriology is largely based on

Accepted Answer

A)  Gram stain reaction. 
B)  habitat. 
C)  type of electron receptor used in cellular respiration. 
D)  rRNA sequences. 
E)  cellular morphology. 
A)  Gram stain reaction. 
B)  habitat. 
C)  type of electron receptor used in cellular respiration. 
D)  rRNA sequences. 
E)  cellular morphology.

Question 14

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-negative...

Question 15

Pleomorphic bacteria

Accepted Answer

A)  have a slightly curved rod shape. 
B)  are flexible spirals. 
C)  are both bacillus and coccobacillus in shape. 
D)  are roughly spherical. 
E)  vary in size and shape. 
A)  have a slightly curved rod shape. 
B)  are flexible spirals. 
C)  are both bacillus and coccobacillus in shape. 
D)  are roughly spherical. 
E)  vary in size and shape.

Question 16

The arrangement represented in Figure 11.1 is typical of which of the following genera of bacteria?

Accepted Answer

A)  Bacillus 
B)  Corynebacterium 
C)  Escherichia 
D)  Actinomyces 
E)  Streptococcus 
A)  Bacillus 
B)  Corynebacterium 
C)  Escherichia 
D)  Actinomyces 
E)  Streptococcus

Question 17

Which of the following types of microbes might be found in a boiling hot spring?

Accepted Answer

A)  hyperthermophiles 
B)  phototrophic bacteria 
C)  methanogens 
D)  non-thermophiles 
E)  halophiles 
A)  hyperthermophiles 
B)  phototrophic bacteria 
C)  methanogens 
D)  non-thermophiles 
E)  halophiles

Question 18

Describe the similarities and differences observed among phototrophic bacteria.

Accepted Answer

All major groups of bacteria contain pho

Question 19

A flexible, spiral-shaped bacterium is called a

Accepted Answer

A)  spirochete. 
B)  vibrio. 
C)  coccobacillus. 
D)  spirillum. 
E)  sarcina. 
A)  spirochete. 
B)  vibrio. 
C)  coccobacillus. 
D)  spirillum. 
E)  sarcina.

Question 20

Aerobic cyanobacteria carry out the reactions of nitrogen fixation in

Accepted Answer

A)  akinetes. 
B)  endospores. 
C)  heterocysts. 
D)  chloroplasts. 
E)  lamellae. 
A)  akinetes. 
B)  endospores. 
C)  heterocysts. 
D)  chloroplasts. 
E)  lamellae.

Exam 11: Characterizing and Classifying Prokaryotes

Most of the methane produced by methanogens is oxidized by other types of bacteria before it affects Earth's climate.

Which of the following groups of bacteria is named for its resemblance to fungi?

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

Unusual cellular extensions called prosthecae are associated with which of the following groups of proteobacteria?

Bacteria of the Proteobacteria that are intracellular parasites are members of the

Which of the following bacteria oxidize nitrite (NO₂⁻) to produce nitrate (NO₃⁻)?

A Gram-positive psychrotrophic rod ________ is a frequent contaminant of dairy products and meat and survives phagocytosis.

Endospores

Contamination with ________ is a concern because they are highly resistant to killing.

What does the term "deeply branching bacteria" mean?

Spores known as akinetes are reproductive structures of

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

The classification of prokaryotes in Bergey's Manual of Systematic Bacteriology is largely based on

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.

Pleomorphic bacteria

The arrangement represented in Figure 11.1 is typical of which of the following genera of bacteria?

Which of the following types of microbes might be found in a boiling hot spring?

Describe the similarities and differences observed among phototrophic bacteria.

A flexible, spiral-shaped bacterium is called a

Aerobic cyanobacteria carry out the reactions of nitrogen fixation in

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