What do host cells provide for viruses?a. ATPb. nucleotides and amino acidsc. ribosomesd. all of the above

When comparing DNA and RNA viruses, which mutate more quickly, and why?

The symptoms of a viral infection in a person can be caused by __________.

Vaccines for viral diseases are __________ and help prevent infection by __________.

Prions are __________ that are thought to cause disease by __________.

Which of the following characteristics, structures, or processes is common to both bacteria and viruses?a. metabolismb. ribosomesc. genetic material composed of nucleic acidd. cell division

What does reverse transcriptase do?

Emerging viruses arise bya. mutation of existing viruses.b. the spread of existing viruses to new host species.c. the spread of existing viruses more widely within their host species.d. all of the above.

In the viral replicative cycle, what reaction do viral proteases catalyze? Select True or False for each statement.T/F They catalyze polymerization of amino acids into peptides.T/F They catalyze folding of long peptide chains into functional proteins.T/F They catalyze cutting of polyprotein chains into functional proteins.T/F They catalyze breaking of peptide bonds