Question

What are the stages of formation of NADH?​

Answer 1

$\huge{\mathfrak{\red{Answer}}}$

NADH is formed from NAD+ during glycolysis. The redox balance of the cell has to be maintained for further cycles of glycolysis to continue. In the presence of O2, NAD+ is regenerated by ETC. Pyruvate is converted to acetyl CoA which enters TCA cycle and gets completely oxidized to CO2.

Answer 2

Answer:

NADH is formed from NAD+ during glycolysis. The redox balance of the cell has to be maintained for further cycles of glycolysis to continue. In the presence of O2, NAD+ is regenerated by ETC. Pyruvate is converted to acetyl CoA which enters TCA cycle and gets completely oxidized to CO2.

The 3 stages of Glycolysis

• Stage 1 is the investment stage. 2 mols of ATP are

consumed for each mol of glucose

• Glucose is converted to fructose-1,6-bisphosphate.

• Glucose is trapped inside the cell and at the same time

converted to an unstable form that can be readily cleaved

into 3-carbon units.

• In stage 2 fructose-1,6-bisphosphate is cleaved into 2 3-

carbon units of glycerladehyde-3-phosphate.

• Stage 3 is the harvesting stage. 4 mols of ATP and 2 mols

of NADH are gained from each initial mol of glucose. This

ATP is a result of substrate-level phosphorylation

• Glyceraldehyde-3-phosphate is oxidized to pyruvate

Explanation:

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