Name the 4C compound which gains 2C from acetyl CoA and the 6C compound which results

Oxaloacetate (4 carbon) joins with Acetyl CoA to yield Citrate (6 carbon)

Explanation:

Citrate synthase is an enzyme required during the first step of the citric acid cycle. This enzyme catalyzes the condensation of Acetate from Acetyl Coenzyme A (Acetyl CoA) and Oxaloacetate to yield Citrate, a six-carbon molecule, and Coenzyme A (CoA). Oxaloacetate is first condensed with acetyl CoA to produce citryl CoA which is subsequently hydrolyzed to CoA and citrate.

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b.have there own function.