Viruses
The time from infection until lysis is called as

burst size
eclipse period
latent period
rise period

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

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

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