Problem: Which of the following statements about viruses is true?A. Viruses contain multiple genes, and each of these genes is an oncogene.B. Viruses are the root cause of most - if not all - cancers.C. None of the other answer options is correct.D. Human cancers have not been associated with viruses.E. Viruses are a type of prokaryotic cell.

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Viruses are entities or agents that are much smaller and simpler in structure than eukaryotes or even prokaryotes. They do not have their own metabolic machinery and only become active after infecting their hosts. It was around 1911 when it was first discovered that viruses can cause cancer.

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Problem Details

Which of the following statements about viruses is true?

A. Viruses contain multiple genes, and each of these genes is an oncogene.

B. Viruses are the root cause of most - if not all - cancers.

C. None of the other answer options is correct.

D. Human cancers have not been associated with viruses.

E. Viruses are a type of prokaryotic cell.