Smallpox Is an Enveloped Virus with a DNA Genome

question 16

Multiple Choice

Smallpox is an enveloped virus with a DNA genome.We have eliminated this once deadly virus through an aggressive worldwide vaccination program.Why might a vaccine be successful with smallpox,but not with HIV?

• A) Host cells have RNA in them, and thus do not raise antibodies against RNA.
• B) Viruses with DNA genomes must replicate inside a host cell.
• C) Smallpox is an enveloped virus.
• D) RNA is more stable than DNA, and is less likely to be destroyed by the vaccine.
• E) DNA genomes mutate less rapidly than RNA genomes.

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