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Biological Classification — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBiological Classification1 Mark
MCQ
The viruses contain:
  • A
    Proteins only
  • B
    DNA only
  • C
    Nucleic acids only
  • D
    Proteins, DNA or RNA (nucleic acids)
✓

Answer

  1. Proteins, DNA or RNA (nucleic acids)

Explanation:

Viruses are ultramicroscopic and can cause diseases in plants and animals.

They are very simple in their structure.

They are composed of nucleic acid surrounded by a protein coat.

The nucleic acid can be either RNA or DNA, but never both.

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