Bioenergetics Foldable Fold 3 pieces of paper as follows and label: How do Cells Make and Produce Energy? How do Cells Release Stored Energy?

Photosynthesis Basics Importance of Pigments Light Reaction How do Cells Make and Produce Energy? (Part 1: Photosynthesis Foldable) Photosynthesis Basics Importance of Pigments Light Reaction Dark reaction Comparison of Photosynthesis & Respiration

1. Photosynthesis Basics Define: A process by which an autotroph (ex. plant) uses the sun’s energy to make food (simple sugar= glucose) Equation: 6CO2 + 6H2O + sunlight  C6H12O6 + 6O2 PHOTOSYNTHESIS Phases: Light Reaction Dark Reaction Simplified: Production of simple sugar (glucose = C6H12O6)

2. Importance of Pigments Chloroplasts  contain pigments Pigments – absorb and reflect light Chlorophyll, most common pigment, absorbs all color of light except GREEN, it reflects it! Fall leaves  no chlorophyll Stacks contain pigment that absorb light

3. Light Reaction Depends on light End Product = ATP used in dark reaction

4. Dark Reaction AKA the “Calvin Cycle” Does not depend on light End Result = GLUCOSE

Cell Respiration Basics Glycolysis Citric Acid/Krebs Cycle How do Cells Release Stored Energy? (Part 2: Cellular Respiration Foldable) Cell Respiration Basics Glycolysis Citric Acid/Krebs Cycle Electron Transport Chain Comparison of Photosynthesis & Respiration

1.Cellular Respiration Basics Equation: C6H12O6 + 6O2  6CO2 + 6H2O + ATP Define: A process by which mitochondria breaks down food to produce energy Cellular Respiration Stages: Glycolysis Citric Acid/Krebs Cycle Electron Transport Chain * All living things undergo cell respiration, even plants!

2. Glycolysis Does not require oxygen (anaerobic) Series of chemical reactions that break down glucose into 2 pyruvic acid molecules Starts with 2 ATP Produces 4 ATP Net ATP = 2ATP * Not most effective way to produce energy

3. Citric Acid or Krebs Cylce 2nd step of respiration only if oxygen is present Every turn produces 1 ATP, 2 CO2

4. Electron Transport Chain Step #3 of Cell Respiration only if oxygen is present MOST EFFECTIVE way to produce ATP End result = 32 ATP

Cell Respiration in Review (Glue to Back) Fermentation – anaerobic process (no oxygen) by which food is broken down Types: Lactic Acid Alcoholic

5. Comparison of Photosynthesis & Respiration Word Bank: food production, anaerobic, aerobic, ATP production, light reaction, energy release, glycolysis, Calvin cycle, light, water as reactant, water as product, carbon dioxide reactant, carbon dioxide product, glucose reactant, glucose product, citric acid, electron transport chain, fermentation