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STD 11 - 2. Biology classification — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 2. Biology classification1 Mark
MCQ
Viruses have
  • ✓
    $DNA $ enclosed in a protein coat
  • B
    prokaryotic nucleus
  • C
    single chromosome
  • D
    both $DNA$ and $RNA.$
✓

Answer

Correct option: A.
$DNA $ enclosed in a protein coat
a
(a) : Viruses are nucleoprotein entities which are able to utilize synthetic machinery of a living cell of the host organism for its multiplication which does not involve growth and division. They have either $RNA$ or $DNA$ as genetic material and a protein coat.

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