Question

In glycolysis, during oxidation electrons are removed by:

• A. Glyceraldehyde-3-phosphate
• B. $NA{D}^{+}$
• C. Molecular oxygen
• D. ATP

Answer 1

The correct option is B $NA{D}^{+}$

Glycolysis is a multi-step process that takes place in the cytoplasm, in which glucose (a six carbon sugar) is split into two molecules of the three-carbon sugar pyruvate with the generation of two molecules of ATP and two "high energy" electron carrying molecules of NADH.
In the pay-off stage of glycolysis, NAD+ accepts electrons from triose phosphate (Glyceraldehyde-3-phosphate).

Molecular oxygen is the final electron acceptor in the ETC, which helps generate a proton gradient for the synthesis of ATP.