The Isomerization of Citrate to Isocitrate

Multiple Choice

The isomerization of citrate to isocitrate

A) is the reaction of the citric acid cycle that occurs spontaneously without enzymatic catalysis.
B) protects cells from the toxic effects of arsenite ion.
C) converts a tertiary alcohol,which cannot easily be oxidized,to a secondary alcohol that can be oxidized.
D) is one major regulatory step for the citric acid cycle because it functions as a rate limiting step.
E) A and B