Question

The citric acid cycle is a cycle because the starting molecule, _____, is regenerated at the end.

Answer 1

Oxaloacetate

Step-by-step explanation:

At the end of this series of reactions, the four-carbon starting molecule, oxaloacetate, is regenerated, allowing the cycle to begin again. In the first step of the cycle, acetyl CoAstart text, C, o, A, end text combines with a four-carbon acceptor molecule, oxaloacetate, to form a six-carbon molecule called citrate.

Answer 2

Answer: Oxaloacetate