Cellular Respiration Cellular Respiration Food to energy in 3 steps!

  • Published on

  • View

  • Download

Embed Size (px)


Cellular Respiration

Cellular RespirationFood to energy in 3 steps!1Mitochondria

2Electron CarriersA Hydrogen has 1 electron and 1 protonGaining a hydrogen means gaining electrons and protonsNAD. NADHFAD. FADH2These can be reusedWhy do we need oxygen?Aerobic=with oxygenAn=withoutAnaerobic=without oxygen

Our body needs oxygen to produce large amounts of ATPCellular RespirationThree stepsGlycolysisKrebs cycle (citric acid cycle)Electron transport chainGlycolysisLocated in cytoplasm of cellInput: 1 molecule of GlucoseProduct: 2 Pyruvate2 ATPOverview: 1 molecule of Glucose is broken down into 2 Pyruvate molecules. No Oxygen is needed for Glycolysis to occur.Krebs CycleLocated: Matrix of MitochondriaInput: 2 Pyruvate, NAD, FADOutput: 6 CO2, NADH, FADH2Produces 2 ATPOverview: 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 ChainLocated in the inner membrane (Christae) of the mitochondria Input: NADH, FADH2, O2Output: NAD, FAD, H2OProduces 34 ATPOverview: 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.Cellular Respiration EquationC6H12O6+O2. H2O+ATP