Afood worker wears nail polish on her finger nails. she is starting her shift and will be preparing sandwiches.
what would she do to prevent herself from contaminating the sandwiches?
a. wash her hands twice as often
b. apply a hand antiseptic before her shift
c. wear gloves while she prepares the sandwiches
d. ask her manger if she can prepare soup instead

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.

Which of the following could use reverse transcriptase to transcribe its genome? a) ssrnab) dsrnac) ssdnad) dsdna

Mechanical sissy washers are required to have