Which of the following best describes a polymerase?
It is an enzyme that blocks the formation of nucleic acids.
It's ribosome that catalyzes the formation of nucleic acid
It is an enzyme that slows the formation of DNA.
It is an enzyme that catalyzes the formation of nucleic acid
Which of the following statements about DNA viruses that affect humans is FALSE?
They use the host's enzymes to replicate.
They replicate in the nucleus.
They are single-stranded.
They use the host cell's internal machinery to replicate.
The process whereby DNA is converted into mRNA is known as:
Translation
Latency
Replication
Transcription
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 _____.
nothing happens with the viral genome
viral RNA is always transformed into viral DNA
the virus copies the genetic material of the host cell
the virus uses the host cell to copy the viral genoome
Which of the following refers to the process by which viruses are expelled out of their host cell?
Maturation
Attachment
Viral shedding
The lytic cycle
Which of the following is NOT a method of viral release?
Budding
Cell bursting
Exocytosis
Injection
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.
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 diversity
antigenic shift
genetic deviation
genetic reassortment
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 major changes in the flu virus.
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
Capsomeres, nucleic acids, ribosomes, protomers, envelope
RNA, capsomeres, capsid, protomers, envelope
A virus that infects a bacteria is known as a(n):
Prokayrophage
Eukaryophage
Bacteriovirus
Bacteriophage
Which of the following is the best definition of a virion?
An inert virus outside of a host
An infective virus outside of a host
A virus which has infected a bacteria
An inert virus inside of a host
What is the function of a viral envelope?
It increases infectivity of the virus.
It replaces the capsid.
It helps the virus attach to the host.
It allows the host to recognise the virus.
RNA viruses replicate in the:
Nucleus
Cytoplasm
Mitochondrion
Endoplasmic reticulum
DNA viruses replicate in the:
Nucleus
Endoplasmic reticulum
Cytoplasm
Mitochondrion
