Question

Glyceraldehyde 3-phosphate dehydrogenase operates by stripping a hydride ion

from its substrate. Which molecule is the recipient of the proton and two electrons
during this transfer?_____
(a) oxygen
(b) acetyl CoA
(c) NAD+
(d) FADH

Answer 1

The molecule that is the recipient of the proton and two electrons during the transfer in the operation of glyceraldehyde 3-phosphate dehydrogenase is NAD+.

Step-by-step explanation:

The molecule that is the recipient of the proton and two electrons during the transfer in the operation of glyceraldehyde 3-phosphate dehydrogenase is (c) NAD+.

In the process, NAD+ is reduced to NADH as it accepts the hydride ion (H-) and the proton (H+). This reduction reaction allows NADH to carry the high-energy electrons to the electron transport chain, where they can be used to produce ATP through oxidative phosphorylation.

Therefore, in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase, NAD+ acts as the oxidizing agent and accepts the electrons and proton to form NADH.