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Multiple Choice
Which molecule is required for the reduction of 3-phosphoglycerate (3PG) to glyceraldehyde-3-phosphate (G3P) during glycolysis?
A
NADH
B
ATP
C
NAD+
D
ADP
Verified step by step guidance
1
Understand the context: The reduction of 3-phosphoglycerate (3PG) to glyceraldehyde-3-phosphate (G3P) is a part of the glycolysis pathway, which involves a series of reactions to convert glucose into pyruvate, generating energy in the form of ATP and NADH.
Identify the type of reaction: The conversion of 3PG to G3P is a reduction reaction, which typically involves the gain of electrons or hydrogen atoms.
Determine the role of each molecule: NADH is a common reducing agent in biochemical reactions, providing the necessary electrons for reduction. NAD+ is the oxidized form and would not be used to reduce another molecule. ATP and ADP are involved in energy transfer, not directly in reduction reactions.
Consider the biochemical pathway: In glycolysis, NADH is generated in earlier steps and can be used as a reducing agent in subsequent reactions. This aligns with the need for a reducing agent in the conversion of 3PG to G3P.
Conclude which molecule is required: Based on the role of NADH as a reducing agent in biochemical reactions, it is the molecule required for the reduction of 3PG to G3P during glycolysis.