Deck 10: Genetics of Viruses

Question 1

 What is true in both Temperate Phage and HIV infections?

A) There can be a long latent period where no sign of infection, such as cell death, is detectable.
B) Cell lysis always occurs immediately after virus introduction.
C) Assembled viral particles are always found within the cell.

Answer 1

A

Question 2

Which is a property of emerging viruses?

A) mutate frequently
B) recent origin
C) more likely to cause infection compared to other strains
D) all of these

Answer 2

D

Question 3

The genetic material of HIV is single-stranded RNA.

Answer 3

True

Question 4

What was the outcome of the experiment that reconstituted two different strains of tobacco mosaic viruses that had different infection characteristics?

A) The differences in infection characteristics  depended only on the RNA sequence of the virus strain.
B) The differences in infection characteristics depended only the the protein coat.
C) The differences in infection characteristics depended on an RNA and protein coat interaction.

Question 5

What is the genetic material in the T4 bacteriophage?

A) double-stranded DNA
B) single-stranded DNA
C) single-stranded RNA
D) double-stranded RNA

Question 6

Which virus uses reverse transcriptase in its reproductive cycle?

A) HIV
B) Phage lamda
C) Both of the viruses use reverse transcriptase
D) Neither of the viruses use reverse transcriptase

Question 7

A bacteriophage that is physically integrated into the host chromosome is called a ________.

A) heteroduplex
B) envelope phage
C) prophage
D) plaque

Question 8

What is the genetic material in the parvovirus?

A) single-stranded DNA
B) double-stranded DNA
C) single-stranded RNA
D) double-stranded RNA

Question 9

Most biologists consider viruses to be living organisms,which are classified with the bacteria.

Question 10

A ________ frequently integrates into the host genome,forming prophages and utilizing a lysogenic cycle to manufacture new phages.

A) virulent phage
B) temperate phage
C) bacteria
D) eukaryotic cell

Question 11

A ________ uses the lytic cycle to begin the immediate manufacture of new phages in the host cells. 

A) virulent phage
B) temperate phage
C) bacteria
D) eukaryotic cell