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Biology 3rd Edition Module 5 Photosynthesis: 6 CO2 + 6 H2O + sunlight (reactants) C6H12O6 + 6 O2 (products) In this reaction carbon dioxide, water, and light energy (sunlight) are used to make food (glucose) to be stored for use by cells to use to perform cellular respiration. Two Phases Light Reactions takes place in the thylakoid membrane converts light energy to chemical energy inputs = water and sunlight outputs = ATP and NADPH – to be used in the Calvin cycle splits water molecule for hydrogen ions oxygen is a waste product light dependent Calvin Cycle takes place in the stroma converts CO2 to C6H12O6 inputs = CO2, ATP, NADPH outputs = C6H12O6 (glucose) light independent called a cycle because the required components are continuously regenerated Electron Carriers = NADPH Cellular Respiration: C6H12O6 + 6 O2 6 CO2 + 6 H2O + energy (ATP) In this reaction energy from the breakdown of food (glucose) is stored in ATP. Four Phases of Cellular Respiration Phase/Location Input Glycolysis (cytoplasm) Glucose + 2 ATP Link reaction (mitochondrial matrix) 2 pyruvic acid Krebs cycle (mitochondrial matrix) 2 Acetyl CoA ETC (folded inner membrane of the mitochondria) 10 NADH 2 FADH2 6 O2 (final electron accepter) Final potential ATP produced Electron Carriers = NADH and FADH2 Output 2 pyruvic acid 4 ATP 2 NADH 2 CO2 (waste) 2 NADH 2 Acetyl CoA 4 CO2 (waste) 2 ATP 6 NADH 2 FADH2 34 ATP 6 H2O Net ATP 2 ATP 2 ATP 34 ATP 38 ATP Biology 3rd Edition Module 5