L6

Question 1

Bacteriophages T4 and lambda, pox viruses and the adenoviruses. Are?

Answer 1

dsDNA

Question 2

have a genome exactly the same as the host cell that they are infecting.

Answer 2

DNA viruses with a dsDNA genome

Question 3

Parvoviruses are?

Answer 3

ss DNA

Question 4

hepadnaviruses (Hepatitis virus B) are?

Answer 4

DNA viruses that use reverse transcriptase

Question 5

contain a DNA genome that is partially doublestranded, but contains a single-stranded region.

Answer 5

hepadnaviruses (Hepatitis virus B)

Question 6

Gene transcription yields a plus-strand RNA known
as

Answer 6

pregenome

Question 7

is used as a template for the reverse transcriptase to produce minus-strand DNA genomes, to produce the double-stranded region of the genomes.

Answer 7

pregenome

Question 8

These viruses have segmented genomes.

Answer 8

dsRNA (Rotavirus)

Question 9

can use their genome directly as mRNA with translation by the host ribosome occurring as soon as viral genome gains entry into the cell

Answer 9

+ssRNA

Question 10

influenza virus, rabies virus, and Ebola virus. Are?

Answer 10

• ssRNA

Question 11

cannot be used directly as mRNA

Answer 11

minus-strand RNA viruses

Question 12

each segment often codes for only one protein and they are usually found together in one capsid.

Answer 12

segmented RNA viruses

Question 13

From each segment RNA viral polymerase synthesizes ?

Answer 13

Monocistronic mRNA

Question 14

Translation of the poliovirus genome yields a polyprotein, a large protein with protease activity that cleaves itself into three smaller proteins.

Answer 14

Polyprotein

Question 15

During translation, portions of the viral RNA may be skipped, resulting in different proteins.

Answer 15

Subgenomic mRNA

Question 16

A viral genome can have stop codons embedded throughout the sequence.

Answer 16

Readthrough mechanism