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NEET 2025, Biology Q21: Biomacromolecules

NEET2025Biology
Q.

Histones are enriched with -

  1. A

    Phenylalanine & Arginine

  2. B

    Lysine & Arginine

  3. C

    Leucine & Lysine

  4. D

    Phenylalanine & Leucine

Solution

Histones are small, positively charged basic proteins around which DNA is wrapped. The positive charge comes from a high content of the basic amino acids lysine and arginine, which carry positively charged side chains and bind tightly to the negatively charged phosphate backbone of DNA.

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