Question 1

Lipopolysaccharide is an important cell wall component of ________.

Accepted Answer

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

Question 2

The term that refers to the presence of flagella over the cell surface is ________.

Accepted Answer

A)   amphitrichous
B)   atrichous
C)   lophotrichous
D)   monotrichous
E)   peritrichousF) A) and B)
G) A) and E)

Question 3

The patient is diagnosed with Salmonella enterica serovar Enteritidis infection, a foodborne illness. The identification of the bacterial subspecies is important for developing his treatment plan and was possible due to ________.

Accepted Answer

A)   the analysis of antibody reactions against the pathogen
B)   the analysis of bacterial growth on a solid agar culture
C)   the analysis of the pathogen's Gram-stain
D)   the analysis of the pathogen's motilityE) None of the above
F) B) and D)

Question 4

The bacterial cell membrane is a site for many enzymes and metabolic reactions.

Accepted Answer

A) True 
 B)False

Question 5

Which term is not used to describe bacterial cell shapes?

Accepted Answer

A)   Coccus
B)   Tetrad
C)   Vibrio
D)   Rod
E)   SpirocheteF) C) and E)
G) C) and D)

Question 6

Peptidoglycan is a unique macromolecule found in bacterial ________.

Accepted Answer

A)   cell walls
B)   cell membranes
C)   capsules
D)   slime layers
E)   inclusionsF) A) and E)
G) None of the above

Question 7

Chemotaxis refers to the ability to ________.

Accepted Answer

A)   move in response to light
B)   move in response to a chemical
C)   not move in response to a chemical
D)   transport desired molecules into cells
E)   None of the choices is correct.F) B) and D)
G) A) and B)

Question 8

The two functions of bacterial appendages are ________.

Accepted Answer

A)   attachment and protection
B)   attachment and motility
C)   motility and slime production
D)   energy reactions and synthesis
E)   protection and motilityF) A) and B)
G) All of the above

Question 9

Spirochetes are able to move due to ________.

Accepted Answer

A)   a periplasmic flagellum
B)   a membrane-bound flagellum
C)   cilia serving as walking feet
D)   pseudopods
E)   fimbriaeF) B) and D)
G) A) and B)

Question 10

A chain of rod-shaped cells would be called a(an)  ________.

Accepted Answer

A)   streptobacillus
B)   staphylobacillus
C)   streptococcus
D)   staphylococcus
E)   sarcinaF) A) and B)
G) A) and D)

Question 11

The slime layer provides bacteria greater pathogenicity as compared to the capsule.

Accepted Answer

A) True 
 B)False

Question 12

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)   endospore
B)   cell wall
C)   cell membrane
D)   capsule
E)   slime layerF) A) and D)
G) A) and C)

Question 13

Both gram-positive and gram-negative cells have outer membranes.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Two major structures that allow bacteria to adhere to surfaces are ________ and ________.

Accepted Answer

A)   pili; ribosomes
B)   fimbrae; capsules
C)   lipopolysaccharides; techoic acids
D)   actin filaments; phospholipid membrane(s) 
E)   actin filaments; ribosomesF) A) and C)
G) All of the above

Question 16

Endospores of certain bacterial species can enter tissues in the human body, germinate, and cause an infectious disease.

Accepted Answer

A) True 
 B)False

Question 17

The cell envelope of gram-positive bacteria has two layers: a thick cell wall and the cell membrane.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is mismatched?

Accepted Answer

A)   Ribosomes - protein synthesis
B)   Inclusions - excess cell nutrients and materials
C)   Plasmids - genes essential for growth and metabolism
D)   Nucleoid - hereditary material
E)   Cytoplasm - dense, gelatinous solutionF) C) and D)
G) All of the above

Question 19

Lysozyme is most effective against ________.

Accepted Answer

A)   gram-negative organisms
B)   gram-positive organisms
C)   mycoplasmas
D)   cyanobacteria
E)   archaeaF) D) and E)
G) A) and C)

Question 20

Further microscopic analysis of negatively stained specimens reveals a colorless ring around each of the spherical cells against a dark background. This clearing indicates that the pathogen possesses which structure(s) ?

Accepted Answer

A)   Endospores
B)   A capsule
C)   A nucleoid
D)   PiliE) None of the above
F) A) and B)

Exam 3: Bacteria and Archaea

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

The term that refers to the presence of flagella over the cell surface is ________.

Correct AnswerverifiedShow Answer

Endospores of certain bacterial species can enter tissues in the human body, germinate, and cause an infectious disease.

Correct AnswerverifiedShow Answer

Two major structures that allow bacteria to adhere to surfaces are ________ and ________.

Correct AnswerverifiedShow Answer

The slime layer provides bacteria greater pathogenicity as compared to the capsule.

Correct AnswerverifiedShow Answer

The bacterial cell membrane is a site for many enzymes and metabolic reactions.

Correct AnswerverifiedShow Answer

Lysozyme is most effective against ________.

Correct AnswerverifiedShow Answer

Further microscopic analysis of negatively stained specimens reveals a colorless ring around each of the spherical cells against a dark background. This clearing indicates that the pathogen possesses which structure(s) ?

Correct AnswerverifiedShow Answer

Spirochetes are able to move due to ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A chain of rod-shaped cells would be called a(an) ________.

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 AnswerverifiedShow Answer

The cell envelope of gram-positive bacteria has two layers: a thick cell wall and the cell membrane.

Correct AnswerverifiedShow Answer

Chemotaxis refers to the ability to ________.

Correct AnswerverifiedShow Answer

Peptidoglycan is a unique macromolecule found in bacterial ________.

Correct AnswerverifiedShow Answer

Both gram-positive and gram-negative cells have outer membranes.

Correct AnswerverifiedShow Answer

Lipopolysaccharide is an important cell wall component of ________.

Correct AnswerverifiedShow Answer

The patient is diagnosed with Salmonella enterica serovar Enteritidis infection, a foodborne illness. The identification of the bacterial subspecies is important for developing his treatment plan and was possible due to ________.

Correct AnswerverifiedShow Answer

The two functions of bacterial appendages are ________.

Correct AnswerverifiedShow Answer

Which term is not used to describe bacterial cell shapes?

Correct AnswerverifiedShow Answer

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Two major structures that allow bacteria to adhere to surfaces are and .

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