NEET UG BIOLOGY MCQ: BIOMOLECULES

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Name the four elements called ‘Big-four’ which make up 95% of all elements found in a living system

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Correct option: B

C, H, O, N

Option B (C, H, O, N) is correct because carbon, hydrogen, oxygen, and nitrogen are the most abundant elements in living systems, making up about 95% of their mass.

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