Question 1

A parasite is also a(n) :

Accepted Answer

A)   nitrogen fixer
B)   autotroph
C)   heterotroph
D)   methanogen
E)   mutualistF) A) and C)
G) C) and D)

Question 2

Which of the following statements is NOT true of Gram-positive bacteria?

Accepted Answer

A)   They have a thicker peptidoglycan layer than do Gram-negative bacteria.
B)   They turn purple when subjected to the Gram-staining process whereas Gram-negative bacteria stain pink.
C)   They lack the lipopolysaccharide that Gram-negative bacteria have.
D)   They fluoresce at a different color than do Gram-negative bacteria.
E)   They have a gram molecular weight of more than 1.0 whereas Gram-negative bacteria have a gram molecular weight of less than 1.0.F) A) and C)
G) B) and C)

Question 3

A pathogen is a parasitic microbe.

Accepted Answer

A) True 
 B)False

Question 4

There is great diversity of shape among microbes. Form is one of the ways different taxa can be distinguished. Which of the following shapes are not found among the microbes?

Accepted Answer

A)   rods
B)   spheres
C)   octagons
D)   curved shapes
E)   spiralsF) A) and B)
G) C) and D)

Question 5

Many new, previously unsuspected species have been discovered through application of the molecular technique of DNA sequencing.

Accepted Answer

A) True 
 B)False

Question 6

Type III and Type IV systems are potentially applicable to treatment of human disease by using them to deliver DNA to target cells in human gene therapy.

Accepted Answer

A) True 
 B)False

Question 7

Various anaerobic Archaea that convert carbon dioxide and other carbon-bearing compounds into methane are called methanotrophs.

Accepted Answer

A) True 
 B)False

Question 8

Organisms that fix nitrogen are called:

Accepted Answer

A)   fertilizers
B)   nitrophiles
C)   diazotrophs
D)   nodules
E)   none of the options listedF) C) and E)
G) B) and D)

Question 9

Some bacteria exhibit a primitive form of behavior in that they can sense the properties of their environments and use that ability to make adaptive responses. Which of the following are NOT capabilities of any known bacterium?

Accepted Answer

A)   orientation with respect to the Earth's magnetic field
B)   move to other bacteria and aggregate with them in response to chemical signals
C)   find nutrients by moving upward in the water column with the aid of flotation devices
D)   respond to other individual bacteria and transmit DNA via conjugation
E)   none of the other options presentedF) D) and E)
G) A) and B)

Question 10

Archaea are prokaryotes and Bacteria are eukaryotes.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following characteristics do not occur in ANY cyanobacterium?

Accepted Answer

A)   undergoes photosynthesis
B)   poisons natural bodies of water
C)   generates oxygen
D)   generates methane
E)   detects the Earth's magnetic fieldF) C) and D)
G) A) and E)

Question 12

Which of the following is NOT true of horizontal (lateral)  transfer of genetic information?

Accepted Answer

A)   transfers genes from parent to progeny
B)   increases genetic diversity
C)   is important for inferring phylogeny
D)   can produce large genetic change
E)   occurs commonly in bacteriaF) C) and D)
G) B) and E)

Exam 27: Bacteria and Archaea

Archaea are prokaryotes and Bacteria are eukaryotes.

Correct Answer
verified

Which of the following characteristics do not occur in ANY cyanobacterium?

Correct Answer
verified

Many new, previously unsuspected species have been discovered through application of the molecular technique of DNA sequencing.

Correct Answer
verified

Which of the following statements is NOT true of Gram-positive bacteria?

Correct Answer
verified

Organisms that fix nitrogen are called:

Correct Answer
verified

Type III and Type IV systems are potentially applicable to treatment of human disease by using them to deliver DNA to target cells in human gene therapy.

Correct Answer
verified

Which of the following is NOT true of horizontal (lateral) transfer of genetic information?

Correct Answer
verified

Some bacteria exhibit a primitive form of behavior in that they can sense the properties of their environments and use that ability to make adaptive responses. Which of the following are NOT capabilities of any known bacterium?

Correct Answer
verified

Various anaerobic Archaea that convert carbon dioxide and other carbon-bearing compounds into methane are called methanotrophs.

Correct Answer
verified

There is great diversity of shape among microbes. Form is one of the ways different taxa can be distinguished. Which of the following shapes are not found among the microbes?

Correct Answer
verified

A parasite is also a(n) :

Correct Answer
verified

A pathogen is a parasitic microbe.

Correct Answer
verified

Exam 27: Bacteria and Archaea

Archaea are prokaryotes and Bacteria are eukaryotes.

Correct AnswerverifiedShow Answer

Which of the following characteristics do not occur in ANY cyanobacterium?

Correct AnswerverifiedShow Answer

Many new, previously unsuspected species have been discovered through application of the molecular technique of DNA sequencing.

Correct AnswerverifiedShow Answer

Which of the following statements is NOT true of Gram-positive bacteria?

Correct AnswerverifiedShow Answer

Organisms that fix nitrogen are called:

Correct AnswerverifiedShow Answer

Type III and Type IV systems are potentially applicable to treatment of human disease by using them to deliver DNA to target cells in human gene therapy.

Correct AnswerverifiedShow Answer

Which of the following is NOT true of horizontal (lateral) transfer of genetic information?

Correct AnswerverifiedShow Answer

Some bacteria exhibit a primitive form of behavior in that they can sense the properties of their environments and use that ability to make adaptive responses. Which of the following are NOT capabilities of any known bacterium?

Correct AnswerverifiedShow Answer

Various anaerobic Archaea that convert carbon dioxide and other carbon-bearing compounds into methane are called methanotrophs.

Correct AnswerverifiedShow Answer

There is great diversity of shape among microbes. Form is one of the ways different taxa can be distinguished. Which of the following shapes are not found among the microbes?

Correct AnswerverifiedShow Answer

A parasite is also a(n) :

Correct AnswerverifiedShow Answer

A pathogen is a parasitic microbe.

Correct AnswerverifiedShow Answer

Correct Answer
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