Viruses
Reverse transcriptase is a useful enzyme to have when

an RNA virus converts its RNA to DNA
there are no host cells present
spikes are forming in the new virus
nutrients are scarce

ANSWER DOWNLOAD EXAMIANS APP

Viruses
The sequence of nucleic acid in a variety of viruses and viral host, will find more similarities

among different viruses than between viruses and their hosts
among different viral hosts than between viruses and their hosts
among different viral hosts than among different viruses
between viruses and their hosts than among different viruses

ANSWER DOWNLOAD EXAMIANS APP