Chemistry PYQ 142 of 152 · Biomolecules

Nitrogen is NOT an essential constituent of

  1. AChlorophyll
  2. BRNA
  3. CDNA
  4. DCarbohydrate

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Correct answer: (d) Carbohydrate

Explanation

Carbohydrates contain only carbon, hydrogen and oxygen and have no nitrogen.

Nitrogen is essential in chlorophyll (its central ring) and in the nitrogenous bases of RNA and DNA.

Thus nitrogen is not a constituent of carbohydrates.

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