NEW
Font size
WorksheetsViruses
Total questions: 14
Worksheet time: 38mins
The outer protein coat of a virus is called a
DNA core.
capsid.
bacteriophages.
endospores.
What is the basic structure of a virus?
DNA or RNA surrounded by a protein coat.
a capsid surrounded by a protein coat.
a tail sheath surrounded by tail
a tiny cell surrounded by a cell.
Which occurs during the lysogenic cycle of a virus infection?
Viral genes instruct the host cell to make more viral protein capsids and enzymes needed for viral replication.
The virus produces active, immediate infections.
The virus takes over the cell, makes copies of itself, and usually kills the host cell.
The viral genes become a part of the host cell DNA, so the cell continually makes more copies of the virus.
The flu is caused by a virus.
true
false
Viruses cause infection by
producing toxins that harm the body.
reproducing independently inside the body.
forming endospores.
entering body cells and replicating.
If Andy is feeling symptoms from a virus that he contracted, the virus must be in the
lytic cycle
lysogenic cycle
the capsid bursts
the virus becomes dormant
Which cycle of a virus is most destructive to the host?
lytic cycle
lysogenic cycle
Animal viruses often infect only specific host cells because
they must have the same DNA as their host cell.
the host cell has specific receptors for the glycoproteins on the virus.
the enzymes of the virus can attach only to specific host cells.
The instructions for making new copies of a virus are
a part of a virus's capsid.
coded in surface proteins attached to the protein coat.
coded in either RNA or DNA.
found only in bacteriophages.
In which type of cell cycle(s) does viral DNA become integrated into the host cell's DNA?
lytic
lysogenic
neither lytic nor lysogenic
lytic and lysogenic
