Viruses
A) arise from preexisting viruses.
B) replicate their DNA before they reproduce.
C) develop and reproduce only within the cells of hosts.
D) cannot replicate.
E) None of the above

Question

Quizplus · Accepted Answer

Viruses are obligate intracellular parasites, meaning they cannot reproduce or carry out metabolism outside of a host cell. They infect host cells and use the host cell's machinery to replicate their DNA and produce new virus particles. Therefore, viruses develop and reproduce only within the cells of hosts.