Chemical Constituents of Cells · NCERT Biology

Which of the following is the most abundant protein in the whole of the biosphere?

  1. Collagen
  2. Hemoglobin
  3. RuBisCO enzyme
  4. Insulin hormone
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Correct answer: RuBisCO enzyme

Ribulose bisphosphate carboxylase-oxygenase (RuBisCO) is the most abundant protein in the biosphere due to its central role in photosynthetic carbon fixation in plants and algae. Collagen is the most abundant protein in the animal world.

Difficulty: Medium Question 3 of 20

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