Question 1

Which cell structure is an important agent in modern genetic engineering techniques?

Accepted Answer

A)  ribosomes
B)  capsules
C)  plasmids
D)  inclusions
E)  mesosomesF) A) and C)
G) A) and B) C

Question 2

When a rod shaped bacteria is short and plump, it is called a:

Accepted Answer

A)  spirochete.
B)  pleomorphism.
C)  vibrio.
D)  coccobacillus.
E)  spirillum.F) A) and B)
G) All of the above

Question 3

The _____ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.

Accepted Answer

The answer of The _____ stain is used to stain...

Question 4

Endospores are

Accepted Answer

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

Question 5

All of the following structures contribute to the ability of pathogenic bacteria to cause disease, except

Accepted Answer

A)  inclusions.
B)  fimbriae.
C)  capsule.
D)  slime layer.
E)  outer membrane of gram-negative cell walls.F) A) and E)
G) B) and C) A

Question 6

Compare the following: bacterial species, bacterial strain, and bacterial type.
Explain the relationship and development of strains and types to a species.

Accepted Answer

Bacterial species, bacterial strain, and...

Question 7

All of the following pertain to endotoxins, except they

Accepted Answer

A)  are specific bacterial cell wall lipids.
B)  can stimulate fever in the human body.
C)  can cause shock in the human body.
D)  are involved in typhoid fever and some meningitis cases.
E)  are found in acid fast bacterial cell walls.F) B) and C)
G) A) and E)

Question 8

A microoganism has been described to you as living in hot acidic habitats in the waste piles of coal mines that regularly sustain a pH of 1 and a temperature of nearly 60 ∘\circ∘ C.Which type of organism do you immediately assume it is?

Accepted Answer

A)  Gracillucates
B)  Firmicutes
C)  Actinobacteria
D)  Archaea
E)  Spirochaetes F) A) and D)
G) A) and E)

Question 9

Sarcinae refers to

Accepted Answer

A)  cocci in pairs.
B)  a cuboidal packet of cells.
C)  groups of endopsores.
D)  coffee-bean shaped rods in pairs.
E)  vibrios in threes.F) A) and C)
G) A) and D)

Question 10

The site/s for most ATP synthesis in prokaryotic cells is/are the

Accepted Answer

A)  ribosomes.
B)  mitochondria.
C)  cell wall.
D)  inclusions.
E)  cell membrane.F) A) and E)
G) B) and E)

Question 11

_____ is a macromolecule containing alternating N-acetylglucosamine and N-acetylmuramic acid cross-linked by short peptide fragments.

Accepted Answer

The answer of _____ is a macromolecule containing alternating N-acetylglucosamine...

Question 12

Movement of a cell toward a chemical stimulus is termed _____.

Accepted Answer

The answer of Movement of a cell toward a chemical...

Question 13

Magnetosomes are

Accepted Answer

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

Question 14

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

Question 15

The difference in cell wall structure of Mycobacterium and Nocardia compared to the typical gram-positive bacterial cell wall structure is

Accepted Answer

A)  more peptidoglycan.
B)  predominance of unique, waxy lipids.
C)  easily decolorized.
D)  presence of lipopolysaccharide.
E)  All of the choices are correct.F) B) and C)
G) A) and E)

Question 16

The most immediate result of destruction of a cell's ribosomes would be

Accepted Answer

A)  material would not be able to cross the cell membrane.
B)  protein synthesis would stop.
C)  destruction of the cell's DNA.
D)  formation of glycogen inclusions.
E)  loss of capsule.F) A) and B)
G) A) and C)

Question 17

If during the Gram stain procedure, the bacterial cells were viewed immediately after crystal violet was applied, gram-positive cells would be purple but gram-negative cells would be colorless.

Accepted Answer

A) True 
 B)False

Question 18

All of the following are correct about biofilms, except

Accepted Answer

A)  they are cooperative associations among several microbial groups.
B)  they play an important role in recycling elements in the earth.
C)  they can colonize medical devices.
D)  an example could be the scum that builds up in toilet bowls.
E)  they are harmless aggregations of microbes.F) A) and B)
G) A) and E)

Question 19

Peptidoglycan is a unique macromolecule found in bacterial

Accepted Answer

A)  cell walls.
B)  cell membranes.
C)  capsules.
D)  slime layers.
E)  inclusions.F) B) and D)
G) A) and B)

Question 20

Archaea do not have the typical peptidoglycan structure found in bacterial cell walls.

Accepted Answer

A) True 
 B)False

Exam 4: A Survey of Prokaryotic Cells and Microorganisms

Which cell structure is an important agent in modern genetic engineering techniques?

Correct AnswerverifiedC

When a rod shaped bacteria is short and plump, it is called a:

Correct AnswerverifiedShow Answer

The _____ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.

Correct AnswerverifiedShow Answer

Endospores are

Correct AnswerverifiedShow Answer

All of the following structures contribute to the ability of pathogenic bacteria to cause disease, except

Correct AnswerverifiedA

Compare the following: bacterial species, bacterial strain, and bacterial type. Explain the relationship and development of strains and types to a species.

Correct AnswerAnswered by ExamLex AIBacterial species, bacterial strain, and...View AnswerShow Answer

All of the following pertain to endotoxins, except they

Correct AnswerverifiedShow Answer

A microoganism has been described to you as living in hot acidic habitats in the waste piles of coal mines that regularly sustain a pH of 1 and a temperature of nearly 60 ∘\circ∘ C.Which type of organism do you immediately assume it is?

Correct AnswerverifiedShow Answer

Sarcinae refers to

Correct AnswerverifiedShow Answer

The site/s for most ATP synthesis in prokaryotic cells is/are the

Correct AnswerverifiedShow Answer

_____ is a macromolecule containing alternating N-acetylglucosamine and N-acetylmuramic acid cross-linked by short peptide fragments.

Correct AnswerverifiedShow Answer

Movement of a cell toward a chemical stimulus is termed _____.

Correct AnswerverifiedShow Answer

Magnetosomes are

Correct AnswerverifiedD

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

The difference in cell wall structure of Mycobacterium and Nocardia compared to the typical gram-positive bacterial cell wall structure is

Correct AnswerverifiedShow Answer

The most immediate result of destruction of a cell's ribosomes would be

Correct AnswerverifiedShow Answer

If during the Gram stain procedure, the bacterial cells were viewed immediately after crystal violet was applied, gram-positive cells would be purple but gram-negative cells would be colorless.

Correct AnswerverifiedShow Answer

All of the following are correct about biofilms, except

Correct AnswerverifiedShow Answer

Peptidoglycan is a unique macromolecule found in bacterial

Correct AnswerverifiedShow Answer

Archaea do not have the typical peptidoglycan structure found in bacterial cell walls.

Correct AnswerverifiedShow Answer

Correct Answer
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A

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Answered by ExamLex AI
Bacterial species, bacterial strain, and...
View Answer

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A microoganism has been described to you as living in hot acidic habitats in the waste piles of coal mines that regularly sustain a pH of 1 and a temperature of nearly 60^$\circ$C.Which type of organism do you immediately assume it is?

Correct Answer
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D

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