Which of the following best describes a polymerase?
It is an enzyme that blocks the formation of nucleic acids
It is an enzyme that slows the formation of DNA.
It is an enzyme that catalyzes the formation of nucleic acid
It is a ribosome that catalyze the formation of nucleic acid
Which of the following statements about DNA viruses that affect humans is FAL
They use the host cell's internal machinery to replicate
They are single-stranded
They use the host's enzymes to replicate
They replicate in the nucleus
The process whereby DNA is converted into mRNA is known as:
Translation
Transcription
Latency
Replication
Why are ribosomes important in the replication of DNA viruses?
They produce lipids.
They produce dsDNA
They synthesize carbohydrates
They produce proteins
During the process of viral replication _____.
the virus uses the host cell organelles to copy the virus
viral RNA is always transformed into viral DNA
nothing happens with the viral genome
the virus copies the genetic material of the host cell
How can you explain that an adult who had chicken pox, is now at risk of the shingles infection if you know that both diseases are caused by the same virus?
This is the same thing as the continuous active infection.
The virus has been lying dormant inside the cells
This is akin to the attachment phase of replication.
This is something that occurs during the lytic cycle.
Which of the following refers to the process by which viruses are expelled out of their host cell?
The lytic cycle
Maturation
Viral shedding
Lysogeny
Which of the following is NOT a method of viral release?
Cell bursting
Exocytosis
Apoptosis
Injection
Which of the following is TRUE about an antigenic shift?
It avoids genetic reassortment.
Which of the following is TRUE about an antigenic shift?
It does not cause any changes in the flu virus.
It causes minor changes in the flu virus.
The process in which two viruses mix and match parts of their genome is called _____.
genetic diversity
antigenic shift
genetic reassortment
genetic deviation
What are two of the most important surface proteins found on the influenza virus?
Hemagglutinin and neuraminidase
MHC and CD99
COX-1 and COX-2
LOX and neuraminidase
Which of the following is TRUE about antigenic drift?
It results in the genome reasserting.
It does not cause any changes in the flu virus.
It causes minor changes in the flu virus.
It causes major changes in the flu virus.
Which of the following are present in ALL virions?
Capsomeres, nucleic acids, ribosomes, protomers, envelope
Nucleic acids, capsomeres, capsid, protomers
DNA, capsomeres, capsid, protomers, envelope
Ribosomes, nucleic acids, capsid, protomers
A virus that infects a bacteria is known as a(n):
Prokayrophage
Bacteriovirus
Eukaryophage
Bacteriophage
Which of the following is the best definition of a virion?
An inert virus inside of a host
An inert virus outside of a host
An infective virus outside of a host
A virus which has infected a bacteria
What is the function of a viral envelope?
It increases infectivity of the virus
It holds the nucleic acids inside the virus.
It allows the host to recognise the virus.
It helps the virus attach to the host.
