Bioenergetics Foldable Fold 3 pieces of paper as

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

How do Cells Make and Produce Energy? (Part 1: Photosynthesis Foldable) 1. 2. 3. 4. 5. Photosynthesis Basics Importance of Pigments Light Reaction Dark reaction Comparison of Photosynthesis & Respiration

1. Photosynthesis Basics Define: Equation: A process by which an autotroph (ex. plant) uses the sun’s energy to make food (simple sugar= glucose) 6 CO 2 + 6 H 2 O + sunlight C 6 H 12 O 6 + 6 O 2 PHOTOSYNTHESIS Phases: Simplified: 1. Light Reaction Production of simple sugar (glucose = C 6 H 12 O 6) 2. Dark Reaction

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

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

How do Cells Release Stored Energy? (Part 2: Cellular Respiration Foldable) 1. 2. 3. 4. 5. Cell Respiration Basics Glycolysis Citric Acid/Krebs Cycle Electron Transport Chain Comparison of Photosynthesis & Respiration

1. Cellular Respiration Basics Define: Equation: A process by which mitochondria breaks down food to produce energy C 6 H 12 O 6 + 6 O 2 6 CO 2 + 6 H 2 O + ATP Cellular Respiration Stages: 1. Glycolysis 2. Citric Acid/Krebs Cycle 3. 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 = 2 ATP * Not most effective way to produce energy

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

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, 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