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NEET 2018 · BiologyPrevious Year Question

Which of these statements is incorrect?

Answer: (D) Oxidative phosphorylation takes place in outer mitochondrial membrane. Answer: (D) Oxidative phosphorylation takes place in outer mitochondrial membrane.

  1. A.Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms
  2. B.Glycolysis occurs in cytosol
  3. C.Enzymes of TCA cycle are present in mitochondrial matrix
  4. D.Oxidative phosphorylation takes place in outer mitochondrial membrane✓

Correct Answer

(D) Oxidative phosphorylation takes place in outer mitochondrial membrane

Solution & Explanation

Answer: (D) Oxidative phosphorylation takes place in outer mitochondrial membrane. Solution: This is the INCORRECT statement: oxidative phosphorylation (ETS plus ATP synthase) is located on the INNER mitochondrial membrane, not the outer one. The other three are correct, glycolysis runs in the cytosol and continues as long as NAD is available to accept hydrogen, and the TCA cycle enzymes operate in the mitochondrial matrix. NCERT: Ch 12, p.165, line ~3: "electron transport system (ETS) located on the inner membrane of the mitochondria".

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