1. Pre-Krebs and Krebs Cycle

2. Take place in the mitochondria
2 pyruvate molecules enter the mitochondria from the cytoplasm
3 Functions:
Produces NADH and FADH2
Produces ATP
Produces oxaloacetate

3. Pre-Krebs
1. Pyruvate enters the mitochondria from the cytoplasm
2. CO2 is removed from pyruvate and Acetyl CoA is formed
NAD+ is converted to NADH

4. Krebs Cycle (Citric Acid)
3. Acetyl CoA attaches to oxaleacetate creating citrate
4. Citrate breaks down into intermediates, releasing CO2
4. NADH is produced
5. ATP is formed
6. FADH2 is produced

5. 7. Oxaloacetate is regenerated and continues in the Citric Acid Cycle.