Question 1

Two functions of bacterial appendages are ______ and ______.

Accepted Answer

A)   attachment; energy production
B)   antibiotic resistance; motility
C)   attachment; motility
D)   motility; energy production

Question 2

The term that refers to the presence of a tuft of ﬂagella emerging from a single site is ______.

Accepted Answer

A)   atrichous
B)   monotrichous
C)   peritrichous
D)   amphitrichous
E)   lophotrichous

Question 3

The cell envelope or its parts can interact with human tissue and cause disease.

Accepted Answer

A) True 
 B)False

Question 4

The cell membrane, the cell wall, and the outer membrane comprise the ______.

Accepted Answer

A)   S-layer
B)   glycocalyx
C)   slime layer
D)   peptidoglycan
E)   cell envelope

Question 5

A clinical laboratory that identiﬁes the bacterial agents that cause human disease would refer to Bergey's Manual of ______ Bacteriology for guidance in identiﬁcation.

Accepted Answer

A)   Evolutionary
B)   Classical
C)   Systematic
D)   Determinative

Question 6

If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent the cells from rupturing is the ______.

Accepted Answer

A)   capsule
B)   cell membrane
C)   cell wall
D)   slime layer
E)   endospore C

Question 7

A bacterial cell exhibiting chemotaxis must have ______.

Accepted Answer

A)   ﬁmbriae
B)   metachromatic granules
C)   thylakoids
D)   ﬂagella
E)   a capsule

Question 8

Which of the following is not a characteristic of bacteria?

Accepted Answer

A)   DNA is free in the cytoplasm.
B)   The cell wall is made of peptidoglycan or other distinct polysaccharides.
C)   Ribosomes are present as the site of protein synthesis.
D)   Organelles termed mitochondria are the site of ATP production.

Question 9

Spirochetes are able to move due to ______.

Accepted Answer

A)   glycocalyx for gliding motility
B)   a membrane-bound ﬂagellum
C)   pseudopods
D)   a periplasmic ﬂagellum
E)   cilia serving as walking feet D

Question 10

Mycobacterium and Nocardia are distinguished from other bacteria by the ______ stain.

Accepted Answer

A)   Gram
B)   basic
C)   methylene blue
D)   acid-fast
E)   endospore

Question 11

An irregular cluster of spherical bacterial cells is termed ______.

Accepted Answer

A)   staphylobacillus
B)   staphylospirillum
C)   streptobacillus
D)   streptococcus
E)   staphylococcus

Question 12

E. coli has been isolated and cultured from three different individuals. Upon biochemical testing of these three cultures, you ﬁnd that there are differences in some reactions. What is the best explanation of these differences?

Accepted Answer

A)   The other two cultures are not really E. coli.
B)   Two of the cultures are mutants of the other.
C)   Mistakes have been made in the test interpretation.
D)   This is normal genetic variation seen among strains of E. coli.
E)   These represent three different species of E. coli. D

Question 13

The outcome of the Gram stain is based on differences in the ______.

Accepted Answer

A)   ribosomes
B)   cell membrane
C)   ﬂagella
D)   cell wall

Question 14

Bacterial endospores are produced by ______.

Accepted Answer

A)   Mycoplasma
B)   Entamoeba
C)   Bacillus
D)   Staphylococcus

Question 15

The division of microbes termed the Firmicutes have a cell wall type best described as ______.

Accepted Answer

A)   gram-positive
B)   lacking a cell wall
C)   archaeal
D)   gram-negative

Question 16

Plasmids _______.

Accepted Answer

A)   are located in microcompartments
B)   are essential for survival
C)   often carry genes controlling pathogenicity
D)   cannot be passed between organisms
E)   are found in all bacteria

Question 17

Halobacterium salinarum lives in and requires a high salt concentration. This is an example of an archaeon described as a ______.

Accepted Answer

A)   barophile
B)   psychrophile
C)   halophile
D)   thermophile

Question 18

Which is the correct order for the application of reagents in the Gram stain?

Accepted Answer

A)   Safranin, crystal violet, alcohol/acetone, iodine
B)   Crystal violet, safranin, iodine, alcohol/acetone
C)   Crystal violet, alcohol/acetone, iodine, safranin
D)   Crystal violet, iodine, alcohol/acetone, safranin
E)   Iodine, safranin, crystal violet, alcohol/acetone

Question 19

Magnetosomes are _______.

Accepted Answer

A)   composed of magnetic iron oxide particles
B)   infoldings of the cell membrane
C)   found in all bacteria and some archaea
D)   responsible for the heat resistance of endospores
E)   also termed metachromatic granules

Question 20

Some bacteria have a cytoskeleton of sterols to help maintain their shape.

Accepted Answer

A) True 
 B)False

Exam 4: Bacteria and Archaea

Two functions of bacterial appendages are ______ and ______.

Correct AnswerverifiedShow Answer

The term that refers to the presence of a tuft of ﬂagella emerging from a single site is ______.

Correct AnswerverifiedShow Answer

The cell envelope or its parts can interact with human tissue and cause disease.

Correct AnswerverifiedShow Answer

The cell membrane, the cell wall, and the outer membrane comprise the ______.

Correct AnswerverifiedShow Answer

A clinical laboratory that identiﬁes the bacterial agents that cause human disease would refer to Bergey's Manual of ______ Bacteriology for guidance in identiﬁcation.

Correct AnswerverifiedShow Answer

If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent the cells from rupturing is the ______.

Correct AnswerverifiedC

A bacterial cell exhibiting chemotaxis must have ______.

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of bacteria?

Correct AnswerverifiedShow Answer

Spirochetes are able to move due to ______.

Correct AnswerverifiedD

Mycobacterium and Nocardia are distinguished from other bacteria by the ______ stain.

Correct AnswerverifiedShow Answer

An irregular cluster of spherical bacterial cells is termed ______.

Correct AnswerverifiedShow Answer

E. coli has been isolated and cultured from three different individuals. Upon biochemical testing of these three cultures, you ﬁnd that there are differences in some reactions. What is the best explanation of these differences?

Correct AnswerverifiedD

The outcome of the Gram stain is based on differences in the ______.

Correct AnswerverifiedShow Answer

Bacterial endospores are produced by ______.

Correct AnswerverifiedShow Answer

The division of microbes termed the Firmicutes have a cell wall type best described as ______.

Correct AnswerverifiedShow Answer

Plasmids _______.

Correct AnswerverifiedShow Answer

Halobacterium salinarum lives in and requires a high salt concentration. This is an example of an archaeon described as a ______.

Correct AnswerverifiedShow Answer

Which is the correct order for the application of reagents in the Gram stain?

Correct AnswerverifiedShow Answer

Magnetosomes are _______.

Correct AnswerverifiedShow Answer

Some bacteria have a cytoskeleton of sterols to help maintain their shape.

Correct AnswerverifiedShow Answer

Two functions of bacterial appendages are and .

Correct Answer
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C

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D

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D

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