Answer:
→net of 4 ATPs are produced, with 2 ATPs actually available
→No NADH is produced.
Explanation:
Glycolysis is an anaerobic reaction. Glyceraldehyde-3-phosphate, is an intermediate in the conversion of glucose to PYRUVATE. the end-product of Glycolysis.
In the conversion of 2 molecules of Glyceraldehyde-3-phosphates via intermediate to pyruvate, hydrogenation occurs. One hydrogen ions is removed from each of the 2 molecules of Glyceraldehyde-3-phosphate and transferred to each molecule of NAD+ = NAD+⇒ NADH2 (NADH2 production).
Furthermore, after pyruvate production, with no oxygen available;the reduced 2 NAD+ molecules must be freed, so that they can return for Glycolysis to continue. The Lactic fermentation pathway is needed to remove these 2 hydrogen ions, to convert Pyruvate to Lactic Acid.
This conversion requires oxidation(removal) of all the 2 hydrogen ions of the 2NADH, produced in glycolysis,
PYRUVATE + 2NADH ⇒ LACTIC ACID + NAD+
Therefore no NADH molecules are produced as end products in the conversion of 2 molecules of Glyceraldehyde-3-phosphate; to 2 molecules of Lactate.
