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Photosynthesis. The Process that Powers Life on Earth.
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What is Photosynthesis?. Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight into chemical energy. Inputs: • Sunlight • Water (H2O) • Carbon Dioxide (CO2) Outputs: • Glucose (C6H12O6) • Oxygen (O2).
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Photosynthesis Equation. 6CO2 + 6H2O + Light Energy → C6H12O6 + 6O2 Carbon dioxide enters through stomata. Water is absorbed by roots. Glucose stores chemical energy for the plant. Oxygen is released into the atmosphere..
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Where Photosynthesis Happens. Structure Function Chlorophyll Absorbs sunlight Thylakoid Site of light-dependent reactions Stroma Location of Calvin Cycle.
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Light-Dependent Reactions. 1. Chlorophyll absorbs light energy. 2. Water molecules split into hydrogen and oxygen. 3. Oxygen is released into the atmosphere. 4. Energy carriers ATP and NADPH are produced..
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Calvin Cycle. The Calvin Cycle occurs in the stroma of chloroplasts. Steps: 1. Carbon Fixation 2. Reduction 3. Regeneration The final product is glucose, used for plant energy and growth..
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Factors Affecting Photosynthesis. Effect of Light Intensity on Photosynthesis Rate 1.0 0.8 0.6 0.4 0.2 0.0 10 Light Intensity.
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Importance of Photosynthesis. • Produces oxygen necessary for most life. • Forms the base of almost all food chains. • Converts solar energy into chemical energy. • Helps regulate carbon dioxide in the atmosphere..
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Learn More (Video Resources). CrashCourse Biology – Photosynthesis https://www.youtube.com/watch?v=sQK3Yr4Sc_k Amoeba Sisters – Photosynthesis https://www.youtube.com/watch?v=eY5mhpqGz3g.
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Conclusion. Photosynthesis is essential for life on Earth. It produces oxygen, creates food for ecosystems, and converts sunlight into usable energy..