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Biology Biomolecules NCERT Examplar Single Correct MCQ
Published on: August 21, 2026

When you take cells or tissue pieces and grind them with an acid in a mortar and pestle, all the small biomolecules dissolve in the acid. Proteins, polysaccharides and nucleic acids are insoluble in mineral acid and get precipitated. The acid soluble compounds include aminoacids, nucleosides, small sugars etc. When one adds a phosphate group to a nucleoside, one gets another acid soluble biomolecule called.

A
Nitrogen base
B
Adenine
C
Sugar phosphate
D
Nucleotide

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Each nucleoside is made up of cyclic nitrogenous base, purine or pyrimidine and a pentose sugar. On phosphorylation. it forms a nucleotide, i.e., a molecule with nitrogenous base pentose sugar and three phosphate groups.

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