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A temperate virus is one that will first _____.
 
lie dormant or cause a latent infection
 
cause apoptosis
 
avoid the lysogenic cycle
 
enter the lytic cycle
Why is smallpox a notable exception to the general replication scheme of DNA viruses?
 
It replicates in the cytoplasm.
 
It is a single-stranded DNA virus.
 
It is a retrovirus.
 
It replicates only in the nucleus.
How are glycoproteins important for a virus?
 
Glycoproteins help the virus infect another cell.
 
Glycoproteins allow for conservation of energy
 
Glycoproteins allow the virus to move in the blood.
 
Glycoproteins allow the virus to have a complex structure.
Which of the following statements about +ssRNA viruses is TRUE?
 
They don't need a prepackaged RdRp.
 
They're converted into a dsRNA virus before replication.
 
They're converted to DNA before replication.
 
They're unable use the host cell's machinery to make protein
Reverse transcriptase helps to convert:
 
ssRNA into dsDNA.
 
ssDNA into dsRNA.
 
dsDNA into ssRNA.
 
dsRNA into ssDNA.
A scientist identifies a strand of RNA that can be used directly to code for important viral proteins during viral replication. What have they found?
 
+RNA
 
-RNA
 
RNA minor
 
RNA major
DNA viruses replicate in the:
 
Nucleus
 
Mitochondrion
 
Endoplasmic reticulum
 
Cytoplasm
RNA viruses replicate in the:
 
Cytoplasm
 
Endoplasmic reticulum
 
Mitochondrion
 
Nucleus
What is the function of a viral envelope?
 
It increases infectivity of the virus.
 
It helps the virus attach to the host.
 
It replaces the capsid.
 
It allows the host to recognise the virus.
Which of the following is the best definition of a virion?
 
An infective virus outside of a host
 
An inert virus inside of a host
 
A virus which has infected a bacteria
 
An inert virus outside of a host
A virus that infects a bacteria is known as a(n):
 
Bacteriophage
 
Prokayrophage
 
Eukaryophage
 
Bacteriovirus
Which of the following are present in ALL virions?
 
Nucleic acids, capsomeres, capsid, protomers
 
Capsomeres, nucleic acids, ribosomes, protomers, envelope
 
Ribosomes, nucleic acids, capsid, protomers
 
RNA, capsomeres, capsid, protomers, envelope
Which of the following is TRUE about antigenic drift?
 
It causes minor changes in the flu virus.
 
It does not cause any changes in the flu virus.
 
It results in the genome reasserting.
 
It causes major changes in the flu virus.
The process in which two viruses mix and match parts of their genome is called _____.
 
genetic reassortment
 
genetic diversity
 
antigenic shift
 
genetic deviation
Which of the following is TRUE about an antigenic shift?
 
It causes major changes in the flu virus.
 
It causes minor changes in the flu virus.
 
It does not cause any changes in the flu virus.
 
It avoids genetic reassortment.
Which of the following is NOT a method of viral release?
 
Injection
 
Exocytosis
 
Cell bursting
 
Budding
Which of the following refers to the process by which viruses are expelled out of their host cell?
 
Viral shedding
 
The lytic cycle
 
Attachment
 
Maturation
During the process of viral replication _____.
 
the virus uses the host cell to copy the viral genoome
 
the virus copies the genetic material of the host cell
 
viral RNA is always transformed into viral DNA
 
nothing happens with the viral genome
Why are ribosomes important in the replication of DNA viruses?
 
They produce proteins.
 
They synthesize carbohydrates.
 
They produce dsDNA.
 
They produce lipids.
The process whereby DNA is converted into mRNA is known as:
 
Transcription
 
Replication
 
Translation
 
Latency
Which of the following statements about DNA viruses that affect humans is FALSE?
 
They are single-stranded.
 
They use the host's enzymes to replicate.
 
They replicate in the nucleus.
 
They use the host cell's internal machinery to replicate.
Which of the following best describes a polymerase?
 
It is an enzyme that catalyzes the formation of nucleic acid
 
It is an enzyme that slows the formation of DNA.
 
It is an enzyme that blocks the formation of nucleic acids.
 
It's ribosome that catalyzes the formation of nucleic acid
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