Question 1

Endospores are _______.

Accepted Answer

A)   metabolically inactive
B)   resistant to heat and chemical treatments
C)   resistant to destruction by radiation
D)   living structures
E)   All of the choices are correct.F) B) and E)
G) A) and B)

Question 2

Which of the following is mismatched?

Accepted Answer

A)   Firmicutes - gram-positive cell walls
B)   Tenericutes - waxy, acid-fast cell walls
C)   Mendosicutes - archaea cell walls
D)   Gracilicutes - gram-negative cell wallsE) A) and D)
F) B) and C)

Question 3

Which of the following is not true of the outer membrane?

Accepted Answer

A)   The innermost layer is a phospholipid bilayer.
B)   Porins create channels through the outer membrane.
C)   The uppermost layer is made of lipopolysaccharide.
D)   The lipid portion of the lipopolysaccharide layer is termed endotoxin.
E)   Gram-positive bacteria have an outer membrane.F) A) and C)
G) None of the above

Question 4

Which of the following bacteria is not closely related to the others?

Accepted Answer

A)   Salmonella bongori
B)   Salmonella enterica subsp. enterica
C)   Salmonella enterica subsp. arizonae
D)   Salmonella enterica subsp. indicaE) None of the above
F) All of the above

Question 5

Serological analysis for bacterial identiﬁcation typically involves using _______.

Accepted Answer

A)   speciﬁc antibodies to the bacterial cell antigens
B)   the determination of guanine + cytosine base concentrations
C)   methods to identify cell enzymes
D)   the analysis of the appearance of colonies
E)   a microscope to determine cell morphologyF) A) and D)
G) D) and E)

Question 6

You need to determine if a pure culture of bacteria is gram-positive or gram-negative, but you've just spilled your only solution of crystal violet so you can't do a Gram stain. You decide to try a lysozyme treatment on a sample of each culture and then examine the samples under the microscope. The expected result is _______.

Accepted Answer

A)   gram-negatives will lyse and appears as debris; gram-positives will be unaffected
B)   gram-positives will lyse and appears as debris; gram-negatives will lose cellular morphology and appear as cocci
C)   gram-positives will lyse and appears as debris; gram-negatives will lyse but more slowly
D)   gram-positives will lyse and appears as debris; gram-negatives will be unaffected
E)   gram-negatives will lyse and appears as debris; gram-positives will lose cellular morphology and appear as cocciF) C) and D)
G) B) and E)

Question 7

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

Accepted Answer

A)   lacking a cell wall
B)   gram-negative
C)   gram-positive
D)   archaealE) A) and B)
F) None of the above

Question 8

Which of the following does not pertain to endotoxin?

Accepted Answer

A)   Endotoxin can stimulate fever in the human body.
B)   Endotoxin can cause septic shock in the human body.
C)   Endotoxin is a bacterial cell wall lipid.
D)   Endotoxin is found in acid-fast bacterial cell walls.E) A) and B)
F) A) and C)

Question 9

In which situation would a bacterium most likely have cytoplasmic inclusions?

Accepted Answer

A)   When the cell is synthesizing ﬂagella
B)   In a habitat abundant in nutrients
C)   When the cell is starved for nutrients
D)   When producing an endosporeE) A) and B)
F) A) and C)

Question 10

The chromosome in bacteria and archaea _______.

Accepted Answer

A)   contains all the cell's plasmids
B)   is located in the cell membrane
C)   is part of the nucleoid
D)   forms a single linear strand of DNAE) None of the above
F) B) and C)

Question 11

A research laboratory that identiﬁes the subspecies of bacterial isolates from a recent Salmonella epidemic would refer to Bergey's Manual of ______ Bacteriology for guidance in identiﬁcation.

Accepted Answer

A)   Systematic
B)   Determinative
C)   Classical
D)   EvolutionaryE) B) and C)
F) None of the above

Question 12

Lipopolysaccharide is an important cell envelope component of ______.

Accepted Answer

A)   mycoplasmas
B)   gram-negative bacteria
C)   acid-fast bacteria
D)   gram-positive bacteria
E)   protoplastsF) A) and B)
G) B) and D)

Question 13

The reference for bacterial descriptions and classiﬁcations is _____ Manual of Systematic Bacteriology.

Accepted Answer

A)   Pasteur's
B)   Koch's
C)   Bergey's
D)   Leeuwenhoek's
E)   Lister'sF) A) and C)
G) A) and E)

Question 14

At present, the most accurate indicator of evolutionary relatedness among organisms is the _______.

Accepted Answer

A)   similarities of cell membrane proteins
B)   size of the ribosomes
C)   size of the periplasmic space
D)   size of the bacterial chromosome
E)   sequence of the ribosomal small subunit RNAF) A) and B)
G) None of the above

Question 15

All of the following occur during endospore germination except _______.

Accepted Answer

A)   dehydration of the cell components
B)   binding of a small organic molecule to initiate germination
C)   the cell grows out of its protein coats
D)   enzymes digest the endospore cortexE) C) and D)
F) None of the above

Question 16

A chain of rod-shaped cells would be called a ______.

Accepted Answer

A)   staphylococcus
B)   streptococcus
C)   streptobacillus
D)   Staphylobacillus
E)   palisadeF) A) and B)
G) B) and C)

Question 17

The bacterial ﬂagellum has three components. In order from the cytoplasm to the external environment, they are ______.

Accepted Answer

A)   basal body, hook, and ﬁlament
B)   ﬁlament, basal body, and hook
C)   basal body, ﬁlament, and hook
D)   hook, basal body, and ﬁlament
E)   ﬁlament, hook, and basal bodyF) A) and D)
G) A) and C)

Question 18

If you observe rod-shaped, pink cells on a slide that had just been Gram stained, you can assume that their cell envelope contains endotoxin.

Accepted Answer

A) True 
 B)False

Question 19

The chemical components of ribosomes are proteins and ______.

Accepted Answer

A)   mRNA
B)   tRNA
C)   rRNA
D)   DNAE) A) and B)
F) C) and D)

Question 20

The short, numerous appendages used by some bacterial cells for adhering to surfaces are called ______.

Accepted Answer

A)   cilia
B)   ﬂagella
C)   periplasmic ﬂagella (axial ﬁlaments) 
D)   ﬁmbriae
E)   piliF) A) and B)
G) All of the above

Exam 4: Bacteria and Archaea

The chromosome in bacteria and archaea _______.

Correct Answer
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Which of the following does not pertain to endotoxin?

Correct Answer
verified

The chemical components of ribosomes are proteins and ______.

Correct Answer
verified

Serological analysis for bacterial identiﬁcation typically involves using _______.

Correct Answer
verified

Lipopolysaccharide is an important cell envelope component of ______.

Correct Answer
verified

The short, numerous appendages used by some bacterial cells for adhering to surfaces are called ______.

Correct Answer
verified

Which of the following is not true of the outer membrane?

Correct Answer
verified

In which situation would a bacterium most likely have cytoplasmic inclusions?

Correct Answer
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Correct Answer
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Which of the following is mismatched?

Correct Answer
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Endospores are _______.

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

Correct Answer
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A chain of rod-shaped cells would be called a ______.

Correct Answer
verified

Which of the following bacteria is not closely related to the others?

Correct Answer
verified

At present, the most accurate indicator of evolutionary relatedness among organisms is the _______.

Correct Answer
verified

A research laboratory that identiﬁes the subspecies of bacterial isolates from a recent Salmonella epidemic would refer to Bergey's Manual of ______ Bacteriology for guidance in identiﬁcation.

Correct Answer
verified

If you observe rod-shaped, pink cells on a slide that had just been Gram stained, you can assume that their cell envelope contains endotoxin.

Correct Answer
verified

All of the following occur during endospore germination except _______.

Correct Answer
verified

The bacterial ﬂagellum has three components. In order from the cytoplasm to the external environment, they are ______.

Correct Answer
verified

The reference for bacterial descriptions and classiﬁcations is _____ Manual of Systematic Bacteriology.

Correct Answer
verified

Exam 4: Bacteria and Archaea

The chromosome in bacteria and archaea _______.

Correct AnswerverifiedShow Answer

Which of the following does not pertain to endotoxin?

Correct AnswerverifiedShow Answer

The chemical components of ribosomes are proteins and ______.

Correct AnswerverifiedShow Answer

Serological analysis for bacterial identiﬁcation typically involves using _______.

Correct AnswerverifiedShow Answer

Lipopolysaccharide is an important cell envelope component of ______.

Correct AnswerverifiedShow Answer

The short, numerous appendages used by some bacterial cells for adhering to surfaces are called ______.

Correct AnswerverifiedShow Answer

Which of the following is not true of the outer membrane?

Correct AnswerverifiedShow Answer

In which situation would a bacterium most likely have cytoplasmic inclusions?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

Endospores are _______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A chain of rod-shaped cells would be called a ______.

Correct AnswerverifiedShow Answer

Which of the following bacteria is not closely related to the others?

Correct AnswerverifiedShow Answer

At present, the most accurate indicator of evolutionary relatedness among organisms is the _______.

Correct AnswerverifiedShow Answer

A research laboratory that identiﬁes the subspecies of bacterial isolates from a recent Salmonella epidemic would refer to Bergey's Manual of ______ Bacteriology for guidance in identiﬁcation.

Correct AnswerverifiedShow Answer

If you observe rod-shaped, pink cells on a slide that had just been Gram stained, you can assume that their cell envelope contains endotoxin.

Correct AnswerverifiedShow Answer

All of the following occur during endospore germination except _______.

Correct AnswerverifiedShow Answer

The bacterial ﬂagellum has three components. In order from the cytoplasm to the external environment, they are ______.

Correct AnswerverifiedShow Answer

The reference for bacterial descriptions and classiﬁcations is _____ Manual of Systematic Bacteriology.

Correct AnswerverifiedShow Answer

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