Answer:
FAD substitution will produce 28 ATP instead of 36.
Explanation:
NAD and FAD are coenzymes involved in reversible oxidation and reduction reactions. These compounds are also known as electron carriers. However NADH produce 3 electrons in electron transport chain and FADH2 produce 2 electron beacuase it transfer the electrons to second complex in ETC.
Normal prduction of ATP from glucose;
2 cytoplasmic NADH formed in glycolysis Each yields 2 ATP +4
2 NADH formed in the oxidation of pyruvate Each yields 3 ATP +6
2 FADH2 formed in the citric acid cycle Each yields 2 ATP +4
6 NADH formed in the citric acid cycle Each yields 3 ATP +18
2 ATP from glycolysis +2
2 ATP from citric acid cycle +2
Net yield ATP +36
C6H12O6 + 6 CO2 + 36 ADP + 36 Pi ⇒6 CO2 + 6 H2O + 36 ATP
If we replace the NAD with FAD the total ATP production would be.
2 cytoplasmic FADH2 formed in glycolysis Each yields 2 ATP +4
2 FADH2 formed in the oxidation of pyruvate Each yields 3 ATP +4
2 FADH2 formed in the citric acid cycle Each yields 2 ATP +4
6 FADH2 formed in the citric acid cycle Each yields 2 ATP +12
2 ATP from glycolysis
+2
2 ATP from citric acid cycle +2
Net yield ATP +28
C6H12O6 + 6 CO2 + 28ADP + 28 Pi ⇒6 CO2 + 6 H2O + 28 ATP
