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Electron Carriers0A Hydrogen has 1 electron and 1 proton0Gaining a hydrogen means gaining
electrons and protons0NAD. NADH0FAD. FADH20These can be reused
Why do we need oxygen?
0Aerobic=with oxygen0An=without0Anaerobic=without oxygen
0Our body needs oxygen to produce large amounts of ATP
Cellular Respiration
0Three steps0Glycolysis0Krebs cycle (citric acid cycle)0Electron transport chain
Glycolysis0Located in cytoplasm of cell0Input: 1 molecule of Glucose0Product: 2 Pyruvate02 ATP0Overview: 1 molecule of Glucose is
broken down into 2 Pyruvate molecules. No Oxygen is needed for Glycolysis to occur.
Krebs Cycle0Located: Matrix of Mitochondria0Input: 2 Pyruvate, NAD, FAD0Output: 6 CO2, NADH, FADH20Produces 2 ATP0Overview: the 2 Pyruvate are changed
into Acetyl COA before entering the Krebs Cycle. The Acetyl is changed into Citric Acid. Electron carriers pick up the extra Hydrogen atoms as the molecule is broken down and moves toward the ETC.
Electron Transport Chain0Located in the inner membrane (Christae) of the
mitochondria 0Input: NADH, FADH2, O20Output: NAD, FAD, H2O0Produces 34 ATP0Overview: the electron carriers donate the hydrogen into
enzymes located in the membrane. The electrons move into the membrane while the protons are pushed through the membrane. At the end of the chain the protons push back through an enzyme which powers phosphate to attach to ADP to make ATP.