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Unit 4 notes: Photosynthesis Name: ____________________________________________ Light dependent reaction Light independent reaction ☼ + H2O H + ATP + O2 CO2 + H + ATP C6H12O6 Photosynthesis ☼ + CO2 + H2O C6H12O6 + O2 Photosynthesis (chloroplast) ☼ + CO2 + H2O C6H12O6 + O2 reactants Cellular respiration (mitochondria) products C6H12O6 + O2 CO2 + H2O + ATP reactants products Plants obtain glucose and oxygen from the process of photosynthesis. Plants may reuse CO2, H2O, and ATP for photosynthesis, growth, and reproduction. Animals obtain glucose from eating & oxygen by breathing. Animals will release CO2 + H2O by breathing and use ATP to power the cells of the organism. Unit 4 notes: Photosynthesis Name: ____________________________________________ PHOTOSYNTHESIS Chemical Equation ☼ + 6CO2 + 6H2O C6H12O6 + 6O2 Light – Dependent Reaction Location: thylakoid Occurs when light is present. Organelle: Chloroplast Chlorophyll: Captures energy from light. Gives plants their green color. Light – INdependent Reaction Dark Reaction / Calvin Cycle Location: stroma Occurs with no light. Relies on light dependent reaction. Main Idea Main Idea Make ATP and oxygen from water and light Make glucose from hydrogen, carbon dioxide & ATP H2O is split causing an ATP molecule to form & release O2. The H from the water and the ATP is used in the next reaction. CO2 is split, rearranged, & bonded to H to make a 3-carbon compound. This uses the ATP from the last reaction. The 3 carbon compounds are joined making C6H12O6 Reaction Details Reaction Details ☼ + H2O H + ATP + O2 CO2 + H + ATP C6H12O6 Glucose: C6H12O6 Summary Photosynthesis is the process of converting light, carbon dioxide, and water into glucose and oxygen. Glucose, a carbohydrate, can be stored as a starch for use later or be used to make cellulose for the cell walls of the plant. In a plant the glucose is known as sap. It is transported around the plant via tubes called phloem. Glucose is later converted into ATP in the mitochondria by the process of cellular respiration.