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REVIEW

REVIEW. Where do the light dependent reactions occur? What are the product of the light independent reactions What is the purpose of chlorophyll? Write the photosynthesis equation. All living organisms need Energy!. Autotrophs get energy from sunlight

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REVIEW

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  1. REVIEW • Where do the light dependent reactions occur? • What are the product of the light independent reactions • What is the purpose of chlorophyll? • Write the photosynthesis equation

  2. All living organisms need Energy! • Autotrophsget energy from sunlight • Heterotrophsget energy from organic compounds The ULTIMATE source of energy for plants and animals is the Sun!

  3. CELLULAR RESPIRATION EQUATION Enzymes

  4. The Organelle of Cellular Respiration • Cellular respiration takes place in both Plant and animal cells. • The organelle in which it takes place is the Mitochondria– This is also known as the ‘power-house’ of the cell.

  5. Stages of Cellular Respiration 1st Stage • Glycolysis • After Glycolysis…. • If oxygen present: Cellular Respiration • If oxygen not present: Fermentation C6H12O6 + 6O2 --- 6CO2+ 6H2O + energy

  6. Glycolysis • The cells of most organisms transfer energy found in organic compounds, such as those in foods, to ATP. • The primary fuel for cellular respiration is glucose Fats can also be broken down to produce ATP

  7. REVIEW • Where does cellular respiration take place? • What are the reactants and products of cellular respiration. • 2 reactants • 3 products

  8. Step #1: Glycolysis • Glucose is split into 2 pyruvates to make ATP • Take place in the cytoplasm of the cell • Uses some atp to do this • Does not need oxygen- anaerobic

  9. Step 2 Krebs Cycle • Aerobic – must use oxygen • Pyruvate made during glycolysis combines with oxygen and releases carbon dioxide • 2 atp is produced

  10. Step 3 Electron Transport Chain Electron Transport Chain • The second stage of aerobic respiration takes place in the inner membranes of mitochondria

  11. Anaerobic Respiration • Two forms of anaerobic respiration are: • Lactic Acid fermentation • Alcoholic Fermentation

  12. Fermentation • The process in which Carbohydrates are broken down in the absence of oxygen is called fermentation. • Fermentation enables glycolysis to continue supplying a cell with ATP in anaerobic conditions.

  13. Fermentation • In lactic acid fermentation,pyruvate is converted to lactic acid. • During vigorous exercise, lactic acid fermentation also occurs in the muscles of animals, including humans.This occurs when not enough oxygen is available • During alcoholic fermentation,pyruvate from glycolysis is converted into ethanol and carbon dioxide • Used for making beer, wine , bread

  14. Cellular Respiration/Photosynthesis

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