Question 1

Which of the following is/are obligate intracellular parasites?

Accepted Answer

A)   Chlamydia and Rickettsia
B)   E. coli and Pseudomonas
C)   Mycoplasma
D)   Treponema pallidum
E)   coli and PseudomonasF) None of the above
G) C) and E)

Question 2

Hydrogen sulfide

Accepted Answer

A)   is produced when sulfur compounds are used as terminal electron acceptors.
B)   may react with iron to produce a black precipitate.
C)   is produced by Desulfovibrio.
D)   has a rotten egg smell.
E)   All of the choices are correct.F) None of the above
G) B) and D)

Question 3

Movement of spirochetes occurs by means of structures called

Accepted Answer

A)   cilia.
B)   flagella.
C)   axial filaments.
D)   pili.E) B) and C)
F) A) and B)

Question 4

The genus of bacteria that is able to fix nitrogen and form heterocysts is

Accepted Answer

A)   Pseudomonas.
B)   Escherichia.
C)   Vibrio.
D)   Anabaena.E) None of the above
F) B) and D)

Question 5

Swarmer cells are

Accepted Answer

A)   formed by Myxobacteria.
B)   formed by sheathed bacteria.
C)   also known as coliforms.
D)   part of the green nonsulfur bacteria.E) All of the above
F) B) and C)

Question 6

Bdellovibrio

Accepted Answer

A)   prey on other bacteria.
B)   are parasites of plants.
C)   may fix nitrogen.
D)   are photosynthetic.E) C) and D)
F) A) and D)

Question 7

Many spirochetes are difficult to cultivate, so their classification is based on their

Accepted Answer

A)   morphology and ability to cause disease.
B)   number of flagella.
C)   pattern of pili.
D)   number of chromosomes.E) B) and C)
F) B) and D)

Question 8

The Euryarchaeota includes all

Accepted Answer

A)   known thermophilic extreme acidophiles.
B)   the bacteria.
C)   known methanogens.
D)   green sulfur bacteria.E) A) and B)
F) A) and C)

Question 9

Which of the following contains bacteriochlorophyll?

Accepted Answer

A)   Bacillus subtilus
B)   Staphylococcus aureus
C)   Streptococcus pyogenes
D)   E. coli
E)   Chromatium, Thiospirillum, ThidictyonF) A) and C)
G) A) and D)

Question 10

Endospores of Bacillus stearothermophilus are used in testing autoclave operation.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following colonize the vagina during childbearing years?

Accepted Answer

A)   Streptococci
B)   Clostridium
C)   Lactobacilli
D)   Enterobacter
E)   Clostridium AND LactobacilliF) C) and D)
G) B) and D)

Question 12

Coliforms

Accepted Answer

A)   are an informal grouping of enterics.
B)   ferment lactose.
C)   includes E. coli.
D)   are used as indicators of fecal contamination.
E)   All of the choices are correct.F) A) and B)
G) C) and D)

Question 13

Reticulate and elementary bodies are two forms of

Accepted Answer

A)   Mycoplasma.
B)   Caulobacter.
C)   Chlamydia.
D)   Myxobacteria.E) B) and C)
F) All of the above

Question 14

Streptomyces produce a number of antibiotics.

Accepted Answer

A) True 
 B)False

Question 15

The skin and oral cavity may have anaerobic microenvironments.

Accepted Answer

A) True 
 B)False

Question 16

The most medically relevant species of Pseudomonas is P. aeruginosa.

Accepted Answer

A) True 
 B)False

Question 17

Streptococcus pyogenes

Accepted Answer

A)   is alpha-hemolytic.
B)   is gamma-hemolytic.
C)   is beta-hemolytic.
D)   may form endospores.
E)   is alpha-hemolytic AND may form endospores.F) B) and C)
G) A) and B)

Question 18

Bacteria and Archaea both have members that use sulfur compounds as a terminal electron acceptor.

Accepted Answer

A) True 
 B)False

Question 19

Cyanobacteria

Accepted Answer

A)   are a form of algae.
B)   are prokaryotes.
C)   use hydrogen sulfide as an electron source.
D)   are eukaryotes.E) All of the above
F) None of the above

Question 20

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) B) and D)
F) C) and D)

Exam 11: The Diversity of Prokaryotic Organisms

Bacteria and Archaea both have members that use sulfur compounds as a terminal electron acceptor.

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The skin and oral cavity may have anaerobic microenvironments.

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Coliforms

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The most medically relevant species of Pseudomonas is P. aeruginosa.

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Reticulate and elementary bodies are two forms of

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Swarmer cells are

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Endospores of Bacillus stearothermophilus are used in testing autoclave operation.

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Streptococcus pyogenes

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Hydrogen sulfide

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Bdellovibrio

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Which of the following colonize the vagina during childbearing years?

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Luminescence

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Streptomyces produce a number of antibiotics.

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Many spirochetes are difficult to cultivate, so their classification is based on their

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Cyanobacteria

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The genus of bacteria that is able to fix nitrogen and form heterocysts is

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Which of the following contains bacteriochlorophyll?

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Movement of spirochetes occurs by means of structures called

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Which of the following is/are obligate intracellular parasites?

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The Euryarchaeota includes all

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