Multiple choice

Which of the following is not a characteristic of viruses?

  1. They exist as obligate intra-cellular parasites.

  2. Their outer shell is called capsid.

  3. They replicate, but do not grow.

  4. Capsid is mostly made of polysaccharides.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Viruses are obligate intracellular parasites (true), have an outer shell called capsid (true), and replicate but don't grow/metabolize independently (true). However, capsids are made of protein subunits (capsomeres), NOT polysaccharides, making option D the correct 'not a characteristic' answer.

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