1. What is carbon fixation and why is it important to all heterotrophs? 2. Where do the light and dark reactions occur in: C3 photosynthesis? C4 photosynthesis? CAM photosynthesis?

Cellular Respiration Chapter 8 GTCHS Biology

Metabolic Reactions of Living Organisms SUN RADIANT ENERGY CELL ACTIVITIES PHOTOSYNTHESIS RESPIRATION GLUCOSE ATP(ENERGY)

1. What is photosynthesis? A chemical reaction in which light energy is converted to chemical energy in glucose The most important chemical reaction occurring on the planet! How we consumers get all of our food and energy!!

So plants use energy to make glucose… We break down glucose to get energy!!!!

Cellular Respiration Basically the opposite of photosynthesis The process by which our mitochondria break down glucose to make ATP Chemical equation for aerobic respiration: C6H12O6 + O2  CO2 + H2O + chemical energy (glucose) + (oxygen)  (carbon dioxide) + (water) + (ATP)

Cellular Respiration

Cellular Respiration

Cellular Respiration Steps of aerobic respiration: Glycolysis: First step breaks down glucose into pyruvate 1.5. (Intermediate step: Convert Pyruvate to Acetyl CoA) 2. Krebs Cycle/Citric Acid Cycle: Second step uses the Acetyl CoA to harness electrons for the next step of respiration 3. Electron transport: Third step uses the electrons and H+ ions to make a lot of ATP

Cellular Respiration – 1. Gylcolysis

Cellular Respiration – 1.5 Intermediate Step

Cellular Respiration – 2. Citric Acid Cycle (Krebs Cycle)

Cellular Respiration – 3. Electron Transport Chain That we use for energy! 32

Anaerobic Respiration 1. Lactic Acid Fermentation: Pyruvate  Lactic Acid

Anaerobic Respiration 1. Alcoholic Fermentation: Pyruvate  Ethyl Alcohol