Lecture 20 - The Citric Acid Cycle

Question	Answer
3 stages of cellular respiration	1. Acetyl Co-A Production 2. Acetyl Co-A Oxidation / Citric Acid Cycle 3. Oxidative Phosphorylation
Where does the citric acid cycle (CAC) occur in eukaryotes?	In the matrix of the mitochondria
Where does glycolysis occur?	Cytoplasm
Where does oxidative phosphorylation occur?	In the inner membrane of the mitochondria
Stage 1 of cellular respiration: Acitivated acetate/ production of acetyl co-A	Pyruvate (from sugars), fatty acids and most amino acids are oxidized to yield 2 carbon fragments that form acetyl co-A and CO2 Enzyme: Pyruvate Dehydrogenase Complex (PDC)
Stage 1 of cellular respiration: Acitivated acetate/ production of acetyl co-A	Oxidative decarboxylation of pyruvate Highly exergonic - spontaneous 1 NAD+ reduced to 1 NADH Catalyzed by PDC

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	Created by karen john about 7 years ago