Which of the following best describes a polymerase?
It is an enzyme that slows the formation of DNA.
It is an enzyme that blocks the formation of nucleic acids.
It is an enzyme that catalyzes the formation of nucleic acid
It's ribosome that catalyzes the formation of nucleic acid
Which of the following statements about DNA viruses that affect humans is FALSE?
They replicate in the nucleus.
They are single-stranded.
They use the host cell's internal machinery to replicate.
They use the host's enzymes to replicate.
The process whereby DNA is converted into mRNA is known as:
Transcription
Latency
Replication
Translation
Why are ribosomes important in the replication of DNA viruses?
They synthesize carbohydrates.
They produce dsDNA.
They produce lipids.
They produce proteins.
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
nothing happens with the viral genome
viral RNA is always transformed into viral DNA
Which of the following refers to the process by which viruses are expelled out of their host cell?
Attachment
Viral shedding
The lytic cycle
Maturation
Which of the following is NOT a method of viral release?
Cell bursting
Exocytosis
Injection
Budding
Which of the following is TRUE about an antigenic shift?
It causes minor changes in the flu virus.
It does not cause any changes in the flu virus.
It causes major changes in the flu virus.
It avoids genetic reassortment.
The process in which two viruses mix and match parts of their genome is called _____.
genetic deviation
genetic reassortment
antigenic shift
genetic diversity
Which of the following is TRUE about antigenic drift?
It does not cause any changes in the flu virus.
It causes major changes in the flu virus.
It results in the genome reasserting.
It causes minor changes in the flu virus.
Which of the following are present in ALL virions?
Nucleic acids, capsomeres, capsid, protomers
Ribosomes, nucleic acids, capsid, protomers
RNA, capsomeres, capsid, protomers, envelope
Capsomeres, nucleic acids, ribosomes, protomers, envelope
A virus that infects a bacteria is known as a(n):
Bacteriophage
Bacteriovirus
Eukaryophage
Prokayrophage
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
What is the function of a viral envelope?
It replaces the capsid.
It increases infectivity of the virus.
It allows the host to recognise the virus.
It helps the virus attach to the host.
RNA viruses replicate in the:
Cytoplasm
Endoplasmic reticulum
Nucleus
Mitochondrion
DNA viruses replicate in the:
Mitochondrion
Nucleus
Cytoplasm
Endoplasmic reticulum
