Cellular Respiration and the Kreb's Cycle

These flashcards cover key concepts related to cellular respiration, specifically focusing on pyruvate oxidation and the Kreb's Cycle.

What happens to pyruvate after it leaves the cytoplasm?

It moves into the mitochondrial matrix by active transport.

What are the three steps of pyruvate oxidation?

1. Decarboxylation 2. REDOX 3. Addition of CoA.

What does Acetyl-CoA prepare for?

It is ready for the Kreb's Cycle.

How is energy captured in the Kreb's Cycle?

Energy is released and captured by ATP, NADH, and FADH2.

What is the purpose of the Kreb’s Cycle?

To extract all the energy from what’s remaining of the glucose molecule.

What are the net energy molecules produced per glucose in the Kreb's Cycle?

NADH = 6, FADH2 = 2, ATP = 2.

What occurs during the first step of the Kreb's Cycle (Condensation)?

The acetyl group of acetyl-CoA condenses with oxaloacetate to form citrate.

What happens during the step involving isomerization in the Kreb's Cycle?

Citrate is rearranged to form isocitrate.

What is the result of the decarboxylation step in the Kreb's Cycle?

Isocitrate is converted to alpha-ketoglutarate by losing CO2.

What is the final product formed from succinyl-CoA in the Kreb's Cycle?

Succinate is formed along with the production of ATP.