Net gain of ATP molecules per hexose during aerobic respiration is

Question

Net gain of ATP molecules per hexose during aerobic respiration is (A) 12 (B) 18 (C) 36 (D) 30

Tardigrade Admin · Accepted Answer

Net gain of ATP during aerobic respiration.
(i) Glycolysis provides 2 ATP molecules and

2 N A DH + H^{+}

(ii) Pyruvate oxidation yields

2 N A DH + 2 H^{+}

(iii) Krebs cycle produces 2 GTP molecules,

6 N A DH + H^{+}

and

2 F A D H_{2}

molecules.
(iv) Electron transport system one NADH

+ H^{+}

produce 3ATP and

F A D H_{2}

produce 2 ATP molecules in ETS.
Hence, ETS alone produces 32 or 34 ATP. 2 ATP from glycolysis + 2 GTP from TCA cycle and

32/34

ATP from ETS/ETC

= 38/36

ATP molecule.

Q. Net gain of ATP molecules per hexose during aerobic respiration is