Question 1

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.04.23 Identify several arrangements of bacteria and tell how they are formed.

Question 2

Archaea do not have the typical peptidoglycan structure found in bacterial cell walls.04.34 Explain archaeal adaptations that place them in the category of extremophiles.

Accepted Answer

A) True 
 B)False

Question 3

The enzyme _____, that is found in tears and saliva, can hydrolyze the bonds in the glycan chains of certain bacterial cell walls.

Accepted Answer

The answer of The enzyme _____, that is found in...

Question 4

The bacterial chromosome

Accepted Answer

A)  is located in the cell membrane.
B)  contains all the cell's plasmids.
C)  is part of the nucleoid.
D)  forms a single linear strand of DNA.
E)  All of the choices are correct.

Question 5

Which of the following is mismatched?

Accepted Answer

A)  Rickettsia rickettsii: Rocky Mountain Spotted Fever
B)  Rickettsia typhi: endemic typhus
C)  Chlamydia trachomatis: blindness
D)  Coxiella burnetti: Cow pox
E)  All of these are correct associations

Question 6

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 7

Which 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 solution

Question 8

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

Accepted Answer

A)  ribosomes.
B)  inclusions.
C)  cell wall.
D)  cell membrane.
E)  flagella.04.13 Summarize how gram-positive and gram-negative cells differ in their reactions.

Question 9

Bacterial cells could have any of the following appendages, except

Accepted Answer

A)  flagella.
B)  cilia.
C)  fimbriae.
D)  periplasmic flagella (axial filaments) .
E)  sex pili.

Question 10

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.

Question 11

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.

Question 12

A bacterial cell exhibiting chemotaxis probably has

Accepted Answer

A)  fimbriae.
B)  capsule.
C)  mesosomes.
D)  flagella.
E)  metachromatic granules.

Question 13

Spirochetes have a twisting and flexing locomotion due to appendages called

Accepted Answer

A)  flagella.
B)  cilia.
C)  fimbriae.
D)  periplasmic flagella.
E)  sex pili.

Question 14

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.

Question 15

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 16

Iodine is the decolorizer in the Gram stain.04.13 Summarize how gram-positive and gram-negative cells differ in their reactions.

Accepted Answer

A) True 
 B)False

Question 17

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.

Question 18

In the Gram stain, the mordant is

Accepted Answer

A)  crystal violet.
B)  safranin.
C)  alcohol.
D)  water.
E)  iodine.04.13 Summarize how gram-positive and gram-negative cells differ in their reactions.

Question 19

Cells form a _____ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.04.23 Identify several arrangements of bacteria and tell how they are formed.

Accepted Answer

The answer of Cells form a _____ arrangement when cells...

Question 20

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°C.Which type of organism do you immediately assume it is?

Accepted Answer

A)  Gracillucates
B)  Firmicutes
C)  Actinobacteria
D)  Archaea
E)  Spirochaetes04) 34 Explain archaeal adaptations that place them in the category of extremophiles.

Exam 4: A Survey of Prokaryotic Cells and Microorganisms

Which is mismatched?

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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°C.Which type of organism do you immediately assume it is?

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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 are correct about biofilms, except

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The bacterial chromosome

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In the Gram stain, the mordant is

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Endospores are

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Sarcinae refers to

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Bacterial cells could have any of the following appendages, except

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Which of the following is mismatched?

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

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All of the following pertain to endotoxins, except they

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Spirochetes have a twisting and flexing locomotion due to appendages called

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Iodine is the decolorizer in the Gram stain.04.13 Summarize how gram-positive and gram-negative cells differ in their reactions.

Correct AnswerverifiedShow Answer

A bacterial cell exhibiting chemotaxis probably has

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The enzyme _____, that is found in tears and saliva, can hydrolyze the bonds in the glycan chains of certain bacterial cell walls.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Archaea do not have the typical peptidoglycan structure found in bacterial cell walls.04.34 Explain archaeal adaptations that place them in the category of extremophiles.

Correct AnswerverifiedShow Answer

Magnetosomes are

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Cells form a _____ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.04.23 Identify several arrangements of bacteria and tell how they are formed.

Correct AnswerverifiedShow 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^°C.Which type of organism do you immediately assume it is?

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Bacterial species, bacterial strain, and...
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