During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP
Or
Largest amount of phosphate bond energy is produced in the process of respiration during

Options

A. glycolysis
B. Krebs' cycle
C. conversion of pyruvic acid to acetyl Co-A
D. electron transport chain

Answer

D

Explanation

The last step of aerobic respiration is the oxidation of reduced coenzymes, i.e., `NADH_(2)` and `FADH_(2)` by molecular oxgyen through FAD, ubiquinone, cyt-b, cyt-c, cyt-`c_(1)` , cyt-a and cyt`-a_(3)` . By oxidation of 1 molecules of `NADH_(2)` , 3 ATP molecules of `FADH_(2)2ATP` molecules aer Produced. In glycolysis 2 ATP molecules are produced from ADP.
Further `2NADH_(2)` produce, give `2xx3=6` ATP, on oxidative phosphorylation. Similarly in Krebs' cycle 2 ATP molecules are produced in the electron transport chain.