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 do.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 virus has in its own genome the code for any specialized enzymes that the host does not have.
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.

Question

Quizplus · Accepted Answer

Some viruses carry their own enzymes and machinery within their genome that can perform the roles needed for replication. This includes the ability to convert RNA to DNA, which is necessary for replication of retroviruses such as HIV.

Viruses Use the Host's Machinery to Make Copies of Themselves