Question

Identify the correct pair of statements.
I) Niacin containing coenzyme facilitates the oxidation of malate in the matrix of mitochondria.
II) Heme is the prosthetic group for the enzyme which catalyses the carboxylation of RuBP in the stroma of chloroplast.
III) The electron carrier between cytochrome C reductase and cytochrome C oxidase is attached to the inner surface of inner membrane of mitochondria.
IV) Water splitting reaction in the lumen of thylakoid requires chlorine.

• A. I, II
• B. I, IV
• C. II, III
• D. III, IV

Answer 1

The correct option is B I, IV

Nicotinic acid or niacin is the vitamin which is part of the chemical structure of the coenzymes NAD and NADP. The NAD/NADP-dependent enzymes are involved in oxidation-reduction reactions in energy production. NAD acts as a coenzyme required for the oxidation of malate, which occurs in the matrix of mitochondria. Photolysis of water takes place in the lumen of the thylakoid. The photolysis or splitting of water occurs in order to fulfill the gap created in the photosystem. Chloride ions are required for the water-splitting reaction of photosynthesis through which oxygen is produced. So, the correct answer is option B.