A person born without chemoreceptors would probably be unable to sense pain.
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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.

per vehicle mile, motorcyclists are times more likely to die in a crash than passenger car occupants.

What typically happens when a family member has a problem with alcohol or drugs? adults in the family are affected more than children children in the family are affected more than adults. the entire family is affected. no one in the family is affected.