Question 1

Which viruses have single-stranded RNA that acts as a template for DNA synthesis?

Accepted Answer

A)   lytic phages
B)   proviruses
C)   viroids
D)   bacteriophages
E)   retrovirusesF) A) and B)
G) B) and E)

Question 2

RNA viruses require their own supply of certain enzymes because ________.

Accepted Answer

A)   host cells rapidly destroy the viruses
B)   host cells lack enzymes that can replicate the viral genome
C)   these enzymes translate viral mRNA into proteins
D)   these enzymes penetrate host-cell membranes
E)   these enzymes cannot be made in host cellsF) B) and E)
G) A) and B)

Question 3

You isolate a cell infected with an adenovirus. What are you most likely going to see when you examine the cell?

Accepted Answer

A)   It is a bacterium.
B)   It is undergoing mitosis.
C)   Reverse transcriptase is present in the nucleus.
D)   It does not have a nucleus.E) A) and B)
F) B) and C)

Question 4

You believe that you have isolated a new strain of positive-sense, single-stranded RNA virus and set about studying it in your laboratory. Which of the following lines of evidence would most strongly support your hypothesis that the virus is a [+]ssRNA?

Accepted Answer

A)   The virions are diploid.
B)   You sequence the bases in the viral RNA and the mRNA and find them to be antiparallel.
C)   Introducing a protease inhibitor causes the virus to stop producing proteins and reproducing.
D)   Introducing a reverse transcriptase inhibitor slows down the growth of the virus.E) B) and C)
F) None of the above

Exam 33: Viruses

You believe that you have isolated a new strain of positive-sense, single-stranded RNA virus and set about studying it in your laboratory. Which of the following lines of evidence would most strongly support your hypothesis that the virus is a [+]ssRNA?

Correct Answer
verified

RNA viruses require their own supply of certain enzymes because ________.

Correct Answer
verified

Which viruses have single-stranded RNA that acts as a template for DNA synthesis?

Correct Answer
verified

You isolate a cell infected with an adenovirus. What are you most likely going to see when you examine the cell?

Correct Answer
verified

Exam 33: Viruses

You believe that you have isolated a new strain of positive-sense, single-stranded RNA virus and set about studying it in your laboratory. Which of the following lines of evidence would most strongly support your hypothesis that the virus is a [+]ssRNA?

Correct AnswerverifiedShow Answer

RNA viruses require their own supply of certain enzymes because ________.

Correct AnswerverifiedShow Answer

Which viruses have single-stranded RNA that acts as a template for DNA synthesis?

Correct AnswerverifiedShow Answer

You isolate a cell infected with an adenovirus. What are you most likely going to see when you examine the cell?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified