Question 1

Which feature, if changed, would NOT abolish M13ʹs utility as a cloning vector?

Accepted Answer

A)   ssDNA genome becoming a dsDNA genome
B)   loss of genes that make coat proteins
C)   replacing the segment of non-coding DNA in its genome with an indispensible gene
D)   switch from lysogenic to lytic lifestyleE) None of the above
F) All of the above

Question 2

Which type of viruses generally has the smallest genome?

Accepted Answer

A)   bacteriophages
B)   DNA viruses
C)   RNA viruses
D)   viroidsE) C) and D)
F) B) and C)

Question 3

In designing a drug to inhibit poxvirus, the compound should localize in the hostʹs ________ to be most effective.

Accepted Answer

A)   nucleus
B)   endoplasmic reticulum
C)   cytoplasm
D)   Golgi complexE) B) and C)
F) A) and B)

Question 4

Explain why the viral genome of the MS2 phages can be immediately translated. What type of genome must it have for this to be the case?

Accepted Answer

The MS2 phage has a positive ssRNA genom...

Question 5

How are T7 genes transcribed?

Accepted Answer

A)   Host RNA polymerase is modified to recognize the T7 promoter.
B)   Host RNA polymerase directly translates the T7 genes.
C)   T7 has its own RNA polymerase, which is packaged in its capsid and injected into the host during infection to transcribe T7 genes.
D)   T7 has its own RNA polymerase, which must first be synthesized by the host.E) None of the above
F) B) and C)

Question 6

Knowing the genome of Mu bacteriophages now enables researchers to locate where it incorporates into bacterial genomes.

Accepted Answer

A) True 
 B)False

Question 7

As a consequence of the immune system in humans recognizing dsRNA as foreign

Accepted Answer

A)   dsRNA viruses rarely infect humans.
B)   dsRNA viruses quickly transcribe their genes into mRNA which is insensitive to immune responses.
C)   genomes of RNA viruses are often chemically modified to avoid recognition by human immune cells.
D)   the genomes of dsRNA viruses must avoid human immune cells during infection, including replicating their genomes within their own nucleocapsids.E) A) and B)
F) A) and C)

Question 8

Most archaeal viruses identified appear to have DNA genomes.

Accepted Answer

A) True 
 B)False

Exam 10: Viral Genomics, Diversity, and Ecology

Explain why the viral genome of the MS2 phages can be immediately translated. What type of genome must it have for this to be the case?

Correct Answer
verified
The MS2 phage has a positive ssRNA genom...
View Answer

As a consequence of the immune system in humans recognizing dsRNA as foreign

Correct Answer
verified

Which feature, if changed, would NOT abolish M13ʹs utility as a cloning vector?

Correct Answer
verified

Knowing the genome of Mu bacteriophages now enables researchers to locate where it incorporates into bacterial genomes.

Correct Answer
verified

Which type of viruses generally has the smallest genome?

Correct Answer
verified

Most archaeal viruses identified appear to have DNA genomes.

Correct Answer
verified

How are T7 genes transcribed?

Correct Answer
verified

In designing a drug to inhibit poxvirus, the compound should localize in the hostʹs ________ to be most effective.

Correct Answer
verified

Exam 10: Viral Genomics, Diversity, and Ecology

Explain why the viral genome of the MS2 phages can be immediately translated. What type of genome must it have for this to be the case?

Correct AnswerverifiedThe MS2 phage has a positive ssRNA genom...View AnswerShow Answer

As a consequence of the immune system in humans recognizing dsRNA as foreign

Correct AnswerverifiedShow Answer

Which feature, if changed, would NOT abolish M13ʹs utility as a cloning vector?

Correct AnswerverifiedShow Answer

Knowing the genome of Mu bacteriophages now enables researchers to locate where it incorporates into bacterial genomes.

Correct AnswerverifiedShow Answer

Which type of viruses generally has the smallest genome?

Correct AnswerverifiedShow Answer

Most archaeal viruses identified appear to have DNA genomes.

Correct AnswerverifiedShow Answer

How are T7 genes transcribed?

Correct AnswerverifiedShow Answer

In designing a drug to inhibit poxvirus, the compound should localize in the hostʹs ________ to be most effective.

Correct AnswerverifiedShow Answer

Correct Answer
verified
The MS2 phage has a positive ssRNA genom...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified