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Glycolytic reactions can either be described as reversible or irreversible. Look

ID: 140897 • Letter: G

Question

Glycolytic reactions can either be described as reversible or irreversible. Looking at all 10 reactions in glycolysis, what conclusions can you make about irreversible reactions in general? Choose one or more:

A. They operate far from equilibrium.

B. The enzymes that catalyze these reactions are not shared in opposing pathways (i.e., glycolysis and gluconeogenesis).

C. The activity of the enzymes that catalyze irreversible reactions can be increased or decreased.

D. If the reaction involves ATP, it is an irreversible reaction

Explanation / Answer

the option B is most suitable as the reverse of glycolysis is gluconeogenesis , the enzymes used in reversible reactions are sme in both pathways but they differ only in enzymes with reactions which are irreversible in nature.

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