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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
A nucleoside differs from a nucleotide. It lacks the:
  • A
    Phosphate group.
  • B
    Hydroxyl group.
  • C
    Sugar.
  • D
    Base.
✓

Answer

  1. Phosphate group.

Explanation:

A purine or pyrimidine base joined with a pento.se sugar, either ribose or deoxyribose, is a nucleoside. A nucleotide is a nucleoside with one or more phosphate groups attached to the sugar.

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