What is true about the end products of glycolysis?

Options

A. 2 pyruvic acid `+2ATP + 2NADH_(2)`
B. 2 pyruvic acid `+2NADH_(2)`
C. 1 pyruvic acud `+2ATP + 2NADH_(2)`
D. 2 pyruvic acid `+1ATP +1NADH_(2)`

Answer

A

Explanation

In glycolysis, two molecules of ATP are consumed during two phosphorylation reactions to form fructose 1, 6-biphosphate. In return four molecules of ATP are produced by substrate level phosphorylation (conversion of 1, 3-biphosphoglycerate to 3-phosphoglycerate and phosphoenol pyruvate to pyruvate). Two molecules of `NADH_(2)` are formed at the time of oxidation of glyceraldehyde 3-phosphate to 1, 3-biphosphoglycerate. The net reaction of glycolysis is as follows :
`"Glucose" + 2NAD^(+)+2ADP+2H_(3)PO_(4) rarr 2" Pyruvate" + 2NADH+2H^(+)+2ATP`
Each NADH is equivalent to 2 ATP, so the net gain in glycolysis is 8 ATP.