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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

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

Answer

Correct option: A.
Phosphate group.
A purine or pyrimidine base joined with a pentose 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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