Carbohydrate metabolism 2

As soon as pyruvate is formed in the cytoplasm it enters the mitochondria

• True

• False

The enzyme that converts pyruvate to acetyl CoA is called

• pyruvate carboxylase

• pyruvate dehydrogenase complex

• pyruvate dehydrogenase

• lactate dehydrogenase

The enzyme pyruvate dehydrogenase complex uses many different coenzymes.

• True

• False

___________________ is NOT one of the coenzymes used by the pyruvate dehydrogenase complex.

• NAD+

• Thiamine

• Biotin

• FAD

TCA cycle occurs in both the mitochondria and cytoplasm.

• True

• False

Each cycle of acetyl coA entering into TCA cycle produces 12 ATPs

• True

• False

The 3 enzymes that regulate TCA cycle, just like glycolysis, are inhibited by high levels of ATP

• True

• False

____________ is NOT a regulatory enzyme of TCA cycle

• Citrate synthetase

• Isocitrate dehydrogenase

• a-ketoglutarate dehydrogenase

• Malate dehydrogenase

_______________ uses the energy from proton gradient to drive ATP formation

• ATP synthase

• NADH dehydrogenase

• FADH2 complex

• Cytochromes

In electron transport chain, NADH transfers proton at 2 points to the intermembrane space, so it can form 2 ATPs

• True

• False