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Ch3 Sec3

Ch3 Sec3. Photosynthesis. Key Concepts. How does the sun supply living things with the energy they need? What happens during the process of photosynthesis?. Key Terms. Photosynthesis Autotroph Heterotroph Pigment Chlorophyll Stomata . Ch3 Sec3. Sources of Energy

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Ch3 Sec3

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  1. Ch3 Sec3 Photosynthesis

  2. Key Concepts • How does the sun supply living things with the energy they need? • What happens during the process of photosynthesis?

  3. Key Terms • Photosynthesis • Autotroph • Heterotroph • Pigment • Chlorophyll • Stomata

  4. Ch3 Sec3 • Sources of Energy • The process by which a cell captures energy in sunlight and uses it to make food is called photosynthesis • Nearly all living things obtain energy either directly or indirectly from the energy of sunlight captured during photosynthesis • Autotroph is an organism that makes its own food • Heterotroph is an organism that cannot make its own food

  5. Ch3 Sec2 • The Two Stages of Photosynthesis • During photosynthesis, plants and some other organisms use energy from the sun to convert carbon dioxide and water into oxygen and sugars • Stage 1: Capturing the Sun’s Energy • Pigments are colored chemical compounds that absorb light • Chlorophyll is the main photosynthetic pigment in chloroplasts • Stage 2: Using Energy to Make Food • Stomata are small openings on the undersides of leaves • The Photosynthesis Equation

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