Question 1

Which statement is LEAST characteristic of proteobacteria?​

Accepted Answer

A)   ​They live only inside plants.
B)   ​Some are photoautotrophs.
C)   ​Some are chemoautotrophs.
D)   ​Some are chemoheterotrophs.
E)   ​They are the most diverse group of bacteria.F) B) and E)
G) A) and E)

Question 2

The __________ is a circular molecule of DNA that resides in a region of cytoplasm called the __________.

Accepted Answer

prokaryoti...

Question 3

What feature is LEAST characteristic of a virus?​

Accepted Answer

A)   ​contains DNA or RNA genetic material
B)   ​contains cytoplasm and ribosomes
C)   ​has a protein coat
D)   ​can only replicate inside a living host cell
E)   ​is very smallF) A) and E)
G) B) and C)

Question 4

Four of the following characterize most prokaryotes. Which one is the exception?​

Accepted Answer

A)   ​lack of a nucleus
B)   ​a single circular chromosome
C)   ​cell wall
D)   ​complex internal membranes
E)   ​great metabolic diversityF) C) and E)
G) All of the above

Question 5

Why are endospores so dangerous to food production?

Accepted Answer

​Endospores are capable of withstanding ...

Question 6

In which of the following ways are archaea similar to eukaryotic cells?

Accepted Answer

A)   ​size
B)   ​shape
C)   ​presence of histones
D)   ​DNA polymerases
E)   ​presence of operonsF) A) and D)
G) All of the above

Question 7

Answer the following questions using the five groups listed below:
-The only bacteria that uses the noncyclic photosynthetic pathway.

Accepted Answer

A)  ​halophiles
B)  ​cyanobacteria
C)  ​thermophiles
D)  ​proteobacteria
E)  ​methanogensF) A) and C)
G) C) and E)

Question 8

The methanogenic archaeans are ____ that pull electrons from ____.

Accepted Answer

A)   ​chemoautotrophs; oxygen
B)   ​chemoheterotrophs; carbon dioxide
C)   ​chemoautotrophs; water
D)   ​chemoheterotrophs; methane
E)   ​chemoautotrophs; hydrogen gasF) B) and C)
G) A) and B)

Question 9

Cyanobacteria ____.

Accepted Answer

A)   ​are heterotrophs
B)   ​have evolved from ancient chloroplasts
C)   ​cannotfix carbon
D)   ​cannotfix nitrogen
E)   ​produce ammonia from gaseous nitrogenF) A) and D)
G) B) and D)

Question 10

Archaea reproduce primarily through ____.

Accepted Answer

A)   ​fusion
B)   ​binary fission
C)   ​sex
D)   ​meiosis
E)   ​cell joiningF) A) and E)
G) A) and D)

Question 11

Sequencing of the HIV-1 genome revealed that it is most closely related to ____.

Accepted Answer

A)   ​simian immunodeficiency virus
B)   ​feline immunodeficiency virus
C)   ​bovine immunodeficiency virus
D)   ​hepatitis B
E)   ​H1N1F) A) and B)
G) C) and D) A

Question 12

Of all organisms, prokaryotes are the ____.

Accepted Answer

A)   ​smallest
B)   ​least abundant
C)   ​least metabolically diverse
D)   ​least widespread
E)   ​least evolvedF) B) and D)
G) All of the above

Question 13

Which prokaryote is described accurately?​

Accepted Answer

A)   ​A coccus is corkscrew shaped.
B)   ​An archaean is arch shaped.
C)   ​A bacillus is rod shaped.
D)   ​A spirillum is spherical.
E)   ​A coccus is flattened.F) C) and E)
G) A) and C) C

Question 14

Bacteriorhodopsin is a light-sensitive pigment found in ____ archaeans used to supply energy for ____ production.

Accepted Answer

A)   ​halophilic; ATP
B)   ​thermophilic; carbohydrate
C)   ​methanogenic; methane
D)   ​halophilic; carbohydrate
E)   ​thermophilic; ATPF) B) and C)
G) C) and D)

Question 15

AIDS stands for ____.

Accepted Answer

A)   ​Acquired Immune Deficiency Syndrome
B)   ​Accelerated Immune Death Syndrome
C)   ​Accentuated Induced Deficiency Syndrome
D)   ​Advantageous Immunity Deficiency Syndrome
E)   ​Acquired Immuno Defense SyndromeF) B) and D)
G) C) and D)

Question 16

Pili may do four of the following. Which is the exception?

Accepted Answer

A)   ​They help cells attach to surfaces.
B)   ​They function in conjugation.
C)   ​They extend from the cell surface.
D)   ​They can be transferred between cells.
E)   ​They function in cell locomotion.F) None of the above
G) B) and D) D

Question 17

Answer the following questions using the five groups listed below:
-These produce CH₄.

Accepted Answer

A)  ​halophiles
B)  ​cyanobacteria
C)  ​thermophiles
D)  ​proteobacteria
E)  ​methanogensF) C) and D)
G) B) and D)

Question 18

Four of the following are characteristics of viruses. Which one is the exception?​

Accepted Answer

A)   ​The outer coats of all viruses are alike.
B)   ​The virus contains either DNA or RNA at its core, but not both.
C)   ​Viruses infect organisms in all three domains of life.
D)   ​Most viruses have a protein coat or covering.
E)   ​Some viruses benefit us indirectly.F) A) and C)
G) A) and B)

Question 19

Peptidoglycan is a compound in ____.

Accepted Answer

A)   ​bacterial flagella
B)   ​bacterial cell walls
C)   ​archaean cell walls
D)   ​archaean flagella
E)   ​eukaryote cell wallsF) None of the above
G) A) and B)

Question 20

In what way does prokaryotic fission resemble eukaryotic mitosis?​

Accepted Answer

A)   ​mechanism of chromosome movement
B)   ​production of genetically identical descendant cells
C)   ​chromosome attachment
D)   ​production of a cytoskeletal framework for separating chromosomes
E)   ​horizontal gene transfersF) B) and E)
G) C) and D)

Exam 20: Viruses - Bacteria - and Archaea

Which statement is LEAST characteristic of proteobacteria?​

Correct AnswerverifiedShow Answer

The __________ is a circular molecule of DNA that resides in a region of cytoplasm called the __________.

Correct Answerverifiedprokaryoti...View AnswerShow Answer

What feature is LEAST characteristic of a virus?​

Correct AnswerverifiedShow Answer

Four of the following characterize most prokaryotes. Which one is the exception?​

Correct AnswerverifiedShow Answer

Why are endospores so dangerous to food production?

Correct Answerverified​Endospores are capable of withstanding ...View AnswerShow Answer

In which of the following ways are archaea similar to eukaryotic cells?

Correct AnswerverifiedShow Answer

Answer the following questions using the five groups listed below: -The only bacteria that uses the noncyclic photosynthetic pathway.

Correct AnswerverifiedShow Answer

The methanogenic archaeans are ____ that pull electrons from ____.

Correct AnswerverifiedShow Answer

Cyanobacteria ____.

Correct AnswerverifiedShow Answer

Archaea reproduce primarily through ____.

Correct AnswerverifiedShow Answer

Sequencing of the HIV-1 genome revealed that it is most closely related to ____.

Correct AnswerverifiedA

Of all organisms, prokaryotes are the ____.

Correct AnswerverifiedShow Answer

Which prokaryote is described accurately?​

Correct AnswerverifiedC

Bacteriorhodopsin is a light-sensitive pigment found in ____ archaeans used to supply energy for ____ production.

Correct AnswerverifiedShow Answer

AIDS stands for ____.

Correct AnswerverifiedShow Answer

Pili may do four of the following. Which is the exception?

Correct AnswerverifiedD

Answer the following questions using the five groups listed below: -These produce CH₄.

Correct AnswerverifiedShow Answer

Four of the following are characteristics of viruses. Which one is the exception?​

Correct AnswerverifiedShow Answer

Peptidoglycan is a compound in ____.

Correct AnswerverifiedShow Answer

In what way does prokaryotic fission resemble eukaryotic mitosis?​

Correct AnswerverifiedShow Answer

Which statement is LEAST characteristic of proteobacteria?

Correct Answer
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The is a circular molecule of DNA that resides in a region of cytoplasm called the .

Correct Answer
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prokaryoti...
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What feature is LEAST characteristic of a virus?

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Four of the following characterize most prokaryotes. Which one is the exception?

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Endospores are capable of withstanding ...
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The methanogenic archaeans are that pull electrons from .

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A

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Which prokaryote is described accurately?

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C

Bacteriorhodopsin is a light-sensitive pigment found in archaeans used to supply energy for production.

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D

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Four of the following are characteristics of viruses. Which one is the exception?

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In what way does prokaryotic fission resemble eukaryotic mitosis?

Correct Answer
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