Question

Identify A & B in this condensed scheme of glycolysis

• A. A - DHAP, B- 2-Phosphoglyceric acid
• B. A- Glucose-6-phosphate, B- Pyruvic acid
• C. A - 1, 3-bisphosphoglyceric acid, B - Pyruvic acid
• D. A- Fructose-1, 6-bisphosphate, B - PEP
• E. (A) 2-Phosphoglycerate, (B) Pyruvic acid

Answer 1

The correct option is C

A - 1, 3-bisphosphoglyceric acid, B - Pyruvic acid

In glycolysis, glyceraldehyde-3-phosphate undergoes oxidation and forms 1,3-bis phosphoglyceric acid in the preparatory phase. In this reaction $NA{D}^{+}$ is reduced to NADH and $H^{+}$. In the last step, phosphoenol pyruvate is dephosphorylated to pyruvic acid. In this reaction, phosphate is transferred to ADP to form ATP in payoff phase. Therefore the correct answer is 1,3-biophosphoglycerate and pyruvate or pyruvic acid.