Which of the following statements about the link reaction and Krebs cycle intermediates…

Biology · NEET · NTA ExamsRespiration in Plants

Which of the following statements about the link reaction and Krebs cycle intermediates is/are INCORRECT?

I. Pyruvic acid is converted to Acetyl CoA in the mitochondrial matrix with the release of CO₂ and synthesis of ATP.
II. Oxaloacetic acid (OAA) is a 4-carbon compound that condenses with acetyl CoA to initiate the Krebs cycle.
III. α-Ketoglutaric acid is a 5-carbon intermediate that undergoes oxidative decarboxylation to form Succinyl CoA.
IV. Succinyl CoA is converted to Succinic acid with the reduction of FAD to FADH₂.
V. Citric acid is the first product of the Krebs cycle and is a 6-carbon compound.

Choose the correct option from the following:

  1. I and IV only
  2. II and III only
  3. III and V only
  4. I and V only

Answer

(A) I and IV only

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