Question 1

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

Accepted Answer

A)  flagella
B)  cilia
C)  fimbriae
D)  periplasmic flagella (axial filaments) 
E)  sex piliF) A) and B)
G) None of the above

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

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 E)
G) A) and E)

Question 4

A 23 year-old female presents at a walk-in clinic with a fever,swollen lymph nodes and yellow spots on the throat.A rapid strep test comes back positive,confirming an infection with Streptococcus pyogenes,which has a thick layer of  peptidoglycan in its cell wall.In which of the following taxonomic divisions does S.pyogenes belong?

Accepted Answer

A)  Firmicutes
B)  Gracilicutes
C)  Mendosicutes
D)  TenericutesE) A) and B)
F) None of the above

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

Bacterial endospores are not produced by ________.

Accepted Answer

A)  Staphylococcus
B)  Sporosarcina
C)  Bacillus
D)  Clostridium
E)  All of the choices are correct.F) C) and D)
G) B) and D)

Question 7

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) None of the above
G) C) and D)

Question 8

A bacterial cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is ________.

Accepted Answer

A)  gram-negative
B)  gram-positive
C)  found in archaea
D)  a spheroplast
E)  acid fastF) C) and D)
G) A) and B)

Question 9

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) B) and C)
G) A) and B)

Question 10

The RN provides education for the family about the laboratory findings.Which of the following statements correctly describes the medical importance of a bacterial capsule?

Accepted Answer

A)  A capsule is a slime layer that causes a bacterium to attach to body tissues,making it invasive and difficult to treat.
B)  A capsule allows a bacterium to survive in a dormant state,creating a prolonged course of illness.
C)  A capsule decreases a bacterium's pathogenicity and makes it susceptible to antibiotic treatment.
D)  A capsule can protect a bacterium from the phagocytic activities of white blood cells,enhancing its ability to cause disease.E) B) and C)
F) B) and D)

Question 11

Gram-negative bacteria do not have peptidoglycan in their cell walls.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is mismatched?

Accepted Answer

A)  Gracilicutes - gram-negative cell walls
B)  Firmicutes - gram-positive cell walls
C)  Tenericutes - waxy acid-fast cell walls
D)  Mendosicutes - archaea cell walls
E)  None of the choices are correct.F) A) and B)
G) B) and C) C

Question 13

Pili used for conjugation are only found on gram-negative bacteria.

Accepted Answer

A) True 
 B)False

Question 14

An RN in a primary care office is caring for a 15-year-old male with severe gastrointestinal distress. The patient reports four days of diarrhea, vomiting, and intermittent fever. A stool culture was ordered in an attempt to identify a disease-causing pathogen. 
-Microscopic analysis revealed the presence of gram-negative bacilli in the patient's stool. Based upon this information,which of the following accurately describes the appearance of the bacterium under magnification?

Accepted Answer

A)  Red spheres
B)  Purple rods
C)  Purple spheres
D)  Red rodsE) A) and B)
F) B) and D) D

Question 15

Peptidoglycan is a unique macromolecule found in bacterial ________.

Accepted Answer

A)  cell walls
B)  cell membranes
C)  capsules
D)  slime layers
E)  inclusionsF) All of the above
G) B) and C)

Question 16

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) B) and C)

Question 17

The outcome of the Gram stain is based on differences in the cell's ________.

Accepted Answer

A)  ribosomes
B)  inclusions
C)  wall
D)  membrane
E)  flagellaF) A) and B)
G) A) and E)

Question 18

Cells form a ________ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.

Accepted Answer

A)  tetrad
B)  strep
C)  staph
D)  sarcina
E)  palisadeF) B) and E)
G) A) and D) E

Question 19

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 20

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

Accepted Answer

A) True 
 B)False

Exam 3: Bacteria and Archaea

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

Correct Answer
verified

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

Correct Answer
verified

Which of the following is mismatched?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Bacterial endospores are not produced by ________.

Correct Answer
verified

The two functions of bacterial appendages are ________.

Correct Answer
verified

A bacterial cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is ________.

Correct Answer
verified

Lipopolysaccharide is an important cell wall component of ________.

Correct Answer
verified

The RN provides education for the family about the laboratory findings.Which of the following statements correctly describes the medical importance of a bacterial capsule?

Correct Answer
verified

Gram-negative bacteria do not have peptidoglycan in their cell walls.

Correct Answer
verified

Which of the following is mismatched?

Correct Answer
verified
C

Pili used for conjugation are only found on gram-negative bacteria.

Correct Answer
verified

Correct Answer
verified
D

Peptidoglycan is a unique macromolecule found in bacterial ________.

Correct Answer
verified

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

Correct Answer
verified

The outcome of the Gram stain is based on differences in the cell's ________.

Correct Answer
verified

Cells form a ________ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.

Correct Answer
verified
E

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

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 walls contain endotoxin.

Correct Answer
verified

Exam 3: Bacteria and Archaea

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Bacterial endospores are not produced by ________.

Correct AnswerverifiedShow Answer

The two functions of bacterial appendages are ________.

Correct AnswerverifiedShow Answer

A bacterial cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is ________.

Correct AnswerverifiedShow Answer

Lipopolysaccharide is an important cell wall component of ________.

Correct AnswerverifiedShow Answer

The RN provides education for the family about the laboratory findings.Which of the following statements correctly describes the medical importance of a bacterial capsule?

Correct AnswerverifiedShow Answer

Gram-negative bacteria do not have peptidoglycan in their cell walls.

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedC

Pili used for conjugation are only found on gram-negative bacteria.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

Peptidoglycan is a unique macromolecule found in bacterial ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The outcome of the Gram stain is based on differences in the cell's ________.

Correct AnswerverifiedShow Answer

Cells form a ________ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.

Correct AnswerverifiedE

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

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 walls contain endotoxin.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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C

Correct Answer
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D

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E

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