AP BIOLOGY

CELL RESPIRATION

GLYCOLYSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
For each triose phosphate that is converted in to pyruvate (pyruvic acid) two hydrogens are produced. What does this cause to happen?
A
Triose phosphate is reduced / NAD+ is reduced
B
Triose phosphate is oxidised / NAD+ is reduced
C
Triose phosphate is oxidised / NAD+ is oxidised
Explanation: 

Detailed explanation-1: -Stage 3 of glycolysis: Oxidation of triose phosphate results in the production of ATP.

Detailed explanation-2: -2. Triose phosphate is converted to pyruvate. Each TP molecule (3C) is converted to a pyruvate molecule (3C). This conversion produces another 2 ATP molecules due to phosphorylation of 2 ADP.

Detailed explanation-3: -In oxidation, the two molecules of triose phosphate are then oxidised (they each lose a hydrogen ion) to form two molecules of pyruvate. NAD collects the H+ ions to form two molecules of reduced NAD (NADH) and four molecules of ATP are also produced by substrate-level phosphorylation.

Detailed explanation-4: -Answer and Explanation: In glycolysis, for each molecule of glucose oxidized to pyruvate, C. two molecules of ATP are used and four molecules of ATP are produced.

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