Bio 111 fall 2010 unit 3

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Unformatted text preview: Unit 3 Unit 3 Photosythesis and Cellular Respiration 1 What Is Photosynthesis? What Is Photosynthesis? Photosynthesis is the ability to capture sunlight energy and convert it to chemical energy Cells evolved photosynthesis about 2 billion years ago Most forms of life on Earth depend on the chemical energy and oxygen produced by photosynthetic organisms. However, some ecosystems can survive without light! 2 The Photosynthetic Equation The Photosynthetic Equation 6CO2 + 6H2O + light energy C6H12O6 + 6O2 carbon water dioxide sunlight 4 glucose (sugar) oxygen Self­Feeders are Autotrophs Self­Feeders are Autotrophs Photosynthetic organisms are autotrophs (“self­ feeders”) Photosynthesis occurs in plants, algae, and some prokaryotes Photosynthesis in plants occurs within chloroplasts 5 Anatomy of a Chloroplast Anatomy of a Chloroplast 6 Location of Photosynthetic Reactions Location of Photos...
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