Viruses
Which of the following viruses belong/s to family caliciviridae?

Hepatitis E virus
All of these
Hepatitis B virus
Hepatitis D virus

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Viruses
Which of the following statements is not true of viruses?

All viruses are obligatory intracellular parasites
All viruses have either DNA or RNA as their genetic material
Viruses probably arose from small fragments of cellular chromosomes
Viruses have been successfully grown in pure cultures in test tubes

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