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Unlike a bacterium, a virus cannot

  • A.contain nucleic acid
  • B.be inactivated by heat
  • C.generate its own energy
  • D.contain protein

Answer: C

The inability to generate energy is one of the two constraints that make a virus an obligate intracellular parasite, alongside having no protein-synthesising machinery. Viruses do contain both protein and nucleic acid and are readily inactivated by heat.

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