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Cellular Respiration

Cellular Respiration. Cell respiration. O 2 + C 6 H 12 O 6  CO 2 + H 2 O + Energy (ATP). Mitochondria. What is energy?. ATP = adenosine triphosphate “the energy currency of the cell”. ATP to ADP and back to ATP.

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Cellular Respiration

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  1. Cellular Respiration

  2. Cell respiration O2 + C6H12O6 CO2 + H2O + Energy (ATP)

  3. Mitochondria

  4. What is energy? ATP = adenosine triphosphate “the energy currency of the cell”

  5. ATP to ADP and back to ATP Energy is released when the last P is knocked off. (energy is needed to reattach the P.) A-P-P-P  A-P-P +P ATP ADP +P

  6. There are 3 processes in cell respiration • Glycolysis – splitting of glucose • Kreb’s Cycle – aerobic respiration • Electron Transport chain (ETC) – also aerobic, produces most of the energy

  7. GLYCOLYSIS • Takes place in the cytoplasm • Net gain of 2 ATP • Needs 2 ATP to start reaction • Products: 2 ATP = energy 2 NADH = electron carrier 2 Pyruvic acid = will be broken down next * Does not require O2

  8. Kreb’s Cycle AKA: “citric acid cycle” Occurs in the matrix of the mitochondria Produces: 1) Hydrogen carriers (NADH & FADH) 2) 1 ATP per pyruvate 3) CO2

  9. ETC (Electron transport chain) • Produces most (95%)of the energy (ATP) from cell respiration. • Is an aerobic process (needs oxygen) • Occurs in the inner membrane of the mitochondria • Bounces H+ across membrane to make lots of ATP • Attaches the Hydrogen to oxygen to produce water

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