Question

Which of the following is/are correct for the process of glycolysis?

• A. There is net decrease in standard Gibbs free energy.
• B. The end product is glyceraldehyde 3-phosphate.
• C. First phase includes the phosphorylation of the glucose molecule.
• D. It results in the net gain of NADH.

Hint:

In glycolysis, energy is released through oxidation reactions, and a net gain of NADH and ATP occurs, with pyruvate being the final product.

Answer 1

The Correct Option is A, C, D

(A) Net decrease in standard Gibbs free energy:
In glycolysis, the overall process is exergonic, meaning it results in a net decrease in standard Gibbs free energy, as energy is released. (B) End product is glyceraldehyde 3-phosphate:
While glyceraldehyde 3-phosphate is an important intermediate in glycolysis, the final product of glycolysis is pyruvate, not glyceraldehyde 3-phosphate. (C) First phase includes the phosphorylation of the glucose molecule:
The first phase of glycolysis involves the phosphorylation of glucose to form glucose-6-phosphate, which is correct. (D) Net gain of NADH:
Glycolysis produces a net gain of NADH, as NAD+ is reduced to NADH during the process. Final Answer: \[ \boxed{\text{(A), (C), (D)}}. \]