Multiple choice

Which one of the following is correct for virus?

  1. They have DNA or RNA

  2. They replicate inside the animal cell only

  3. They are living

  4. They are bigger than bacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Viruses have either DNA or RNA as genetic material, never both. This is a fundamental viral characteristic. Option B is wrong because viruses replicate in various cells (plant, animal, bacterial), not just animal cells. Option C is wrong because viruses are not considered fully living (they need host cells). Option D is wrong because viruses are much smaller than bacteria.

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