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.