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Cell Respiration

Cell Respiration. OBJ: describe the structure and function of ATP/ADP OBJ: state and explain the reactants, products, and energy yield (ATP of aerobic respiration). Cell Respiration.

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Cell Respiration

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  1. Cell Respiration OBJ: describe the structure and function of ATP/ADP OBJ: state and explain the reactants, products, and energy yield (ATP of aerobic respiration)

  2. Cell Respiration • Cell Respiration is the process of breaking the chemical bonds of GLUCOSE (a simple carbohydrate) to release ENERGY for life.

  3. Cell Respiration • Breaking chemical bonds releases electrons. • C6H12O6 + 6O2  6CO2 + 6H2O + ENERGY Glucose + Oxygen  Carbon Dioxide + Water + Energy

  4. Energy • Energy = ATP: Adenosine Triphosphate • ATP is our bodies USABLE source of energy.

  5. Energy • Energy = ATP: Adenosine Triphosphate • ATP is our bodies USABLE source of energy. • Energy is stored in the bonds between the phosphates.

  6. Energy • Energy = ATP: Adenosine Triphosphate • ATP is our bodies USABLE source of energy. • Energy is stored in the bonds between the phosphates. • When a phosphate is broken off ATP, it releases energy and become ADP (adenosine Diphosphate)

  7. 2 Types of Cellular Respiration • Aerobic cellular Respiration uses OXYGEN. • Anaerobic cellular respiration does NOT use oxygen.

  8. Aerobic Cellular Respiration OBJ: describe the process for aerobic cellular respiration, location of processes within the cell and energy yield (glycolysis, Kreb's cycle, Electron Transport Chain)

  9. Aerobic Cellular Respiration (3 steps) • Step 1 Glycolysis • Occurs in the CYTOPLASM of the Cell. • Breaks GLUCOSE into 2 PYRUVATE molecules so that they can fit through the membrane of the MITOCHONDRIA. • Releases enough energy to make 2 ATP. GLUCOSE 2 PYRUVATE

  10. Aerobic Cellular Respiration (3 steps) • Step 2: Krebs Cycle (citric acid cycle) • Occurs in the MATRIX. • Releases enough energy to make 2 ATP and makes 6 CO2. • Electron Carriers: • 6 NADH • 2 FADH2

  11. Aerobic Cellular Respiration (3 steps) • Step 3: Electron Transport Chain • Occurs on the inner membrane of the MITOCHONDRIA. • All the electrons from glucose travel to the inner membrane of the mitochondria.

  12. Step 3: Electron Transport Chain continued… • Each time an electron is passed from one electron carrier to the next, enough ENERGY is released to make 1 ATP. • This happen 32 times to make 32 ATP. • The last electron carrier to receive the electron is OXYGEN which quickly combings with 2 hydrogens to make H2O.

  13. Step 3: Electron Transport Chain continued… • The last electron carrier to receive the electron is OXYGEN which quickly combings with 2 hydrogen’s to make H2O.

  14. Review Steps • http://youtu.be/kN5MtqAB_Yc

  15. Anaerobic Cellular Respiration OBJ: describe the overall process and energy yield of anaerobic respiration.OBJ: compare and contrast lactic acid and alcohol fermentation

  16. Anaerobic Cell Respiration • Contains only 2 steps and takes place in: BACTERIA, YEAST, or MUSCLE CELLS when OXYGEN is lacking. • Glycolysis • Fermentation

  17. Anaerobic Cell Respiration • Contains only 2 steps and takes place in: BACTERIA, YEAST, or MUSCLE CELLS when OXYGEN is lacking. • Glycolysis • Fermentation: • Alcohol Fermentation • Occurs in BACTERIA and YEAST • Occurs in the CYTOPLASM of the cell. • Makes 0 ATP and produces 2CO2 and 2 ETHANOL

  18. Anaerobic Cell Respiration • Contains only 2 steps and takes place in: BACTERIA, YEAST, or MUSCLE CELLS when OXYGEN is lacking. • Glycolysis • Fermentation: • Alcohol Fermentation • Occurs in BACTERIA and YEAST • Occurs in the CYTOPLASM of the cell. • Makes 0 ATP and produces 2CO2 and 2 ETHANOL • Lactic Acid Fermentation • Occurs in MUSCLE cells when OXYGEN levels are low. • Occurs in the CYTOPLASM of the cell. • Makes 0 ATP and 2 LACTIC ACID.

  19. Comparing Aerobic and Anaerobic Cellular Respiration OBJ: compare and contrast aerobic and anaerobic respiration

  20. Summary • Total ATP: • Aerobic cell respiration: 36 • Anaerobic cell respiration: 2 • Which type of cellular respiration produces the most ATP? • Which type releases the most energy? • Which type is the most efficient?

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