1.What is the reason for isomerization of citrate to isocitrate? A.The reaction converts a tertiary alcohol, which cannot easily be oxidized, to a secondary alcohol that can be oxidiz B. Isocitrate protects cells from the toxic effects of arsenite ion. C. The reaction is one major regulatory step for the citric acid cycle because it functions as a rate limiting step. D. Isocitrate is a substrate for a reaction that occurs spontaneously without enzymatic catalysis

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