AP BIOLOGY

Detailed explanation-1: -While the Krebs cycle does produce carbon dioxide, this cycle does not produce significant chemical energy in the form of adenosine triphosphate (ATP) directly, and this reaction sequence does not require any oxygen.

Detailed explanation-2: -Results of the Krebs Cycle After the second turn through the Krebs cycle, the original glucose molecule has been broken down completely. All six of its carbon atoms have combined with oxygen to form carbon dioxide. The energy from its chemical bonds has been stored in a total of 16 energy-carrier molecules.

Detailed explanation-3: -NADH and carbon dioxide are products of the Krebs Cycle.

Detailed explanation-4: -1 molecule of glucose produces 2 molecules of pyruvate. So 1 molecule of pyruvate is responsible for the release of 2 CO2 molecules during 1 Krebs cycle.