Which characteristic best distinguishes glycolysis and the Krebs cycle from the electron transport chain?

2 answers:

5 0

I think the amount of ATP produced is best distinguishes glycolysis and the Krebs cycle from the electron transport chain.

koban [17]2 years ago

5 0

Answer:

The characteristic that best differentiates them is the production of energy more precisely the production of ATP molecules.

Explanation:

Anaerobic glycolysis occurs in the absence of O2. It consists of the conversion of pyruvic acid into ethyl alcohol (alcoholic fermentation) or lactic acid (lactic fermentation). These pathways generate a total of two ATP molecules, which represent 5% of what is generated by the aerobic route.

The Krebs cycle: electrons and protons removed in carbon oxidation are accepted by NAD + and FAD. It takes two turns of the cycle to complete the oxidation of a glucose molecule. Thus, the total energy efficiency of the Krebs cycle for a glucose molecule is two molecules of ATP, six molecules of NADH and two molecules of FADH2.

In the electron transport chain each molecule of NADH converts 3 from ATP (2 NADH x 3 = 6 ATP). The conversion of pyruvic acid into AcetylCoA in the mitochondrial matrix gives 2 NADH per glucose molecule. (2 NADH x 3 ATP = 6 ATP).

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