Cellular Respiration vs. Photosynthesis Metabolism Cellular Respiration vs. Photosynthesis

Energy Types Light Chemical* Glucose ATP Kinetic Heat

ATP Different organisms=Different energy sources But all use a 2 step process to provide energy First: Chemical energy from “food” is transferred to ATP. Second: ATP is used to provide an energy source for cells.

ATP-Structure Bond breaks=energy released

Cellular Respiration Transfers chemical energy from glucose into chemical energy in ATP. C6H12O6 + 6O2 6CO2 + 6 H2O 29 ADP + 29 Pi 29 ATP Only 30% of energy goes to ATP; other = heat

Types of Cell Respiration Aerobic: Requires O2 Anaerobic: No O2 = Fermentation Alcoholic Fermentation: Glucose produces CO2 and 2 ethanol (CH2CH3OH) Lactic Acid Fermentation: Glucose produces Pyruvate which becomes Lactic Acid (COOCHOHCH3)

Alcohol Fermentation

Lactic Acid Production

Photosynthesis Light energy converted to chemical energy 6CO2 + 6H2O sun 6O2 + C6H12O6 Thylakoids-turn light into ATP and NADPH Calvin cycle: energy in ATP plus H convert CO2into 3 carbon molecule which becomes glucose and fructose. Glucose + Fructose = Sucrose