ch.10 photosynthesis notes
TRANSCRIPT
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Photosynthesis
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Organisms that make food through photosynthesis: Photoautotrophs
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Photosynthesis happens in the Chloroplast
• Parts of a Chloroplast
– Thylakoid
– Grana• Stack of Thylakoids
– Stroma• Liquid inside Chloroplast
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Photosynthesis Equation
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Melvin Calvin
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The electromagnetic spectrum
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Why are leaves green?
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Determining an absorption spectrum
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Chlorophyll is a Pigment
Pigments•Give a substance color•Plant pigments
•Chlorophyll a – blue-green•Chlorophyll b – yellow-green•Carotenoids – yellow/ orange
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Electrons in chlorophyll are excited by light
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How a photosystem harvests light
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Cyclic Electron Flow: ATP Only
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ATP is made in the Thylakoid Membrane
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Comparison of chemiosmosis in mitochondria and chloroplasts
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The Calvin Cycle converts CO2 into Sugar
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C4 leaf anatomy and the C4 pathway
•Hot, dry environments•Conserve water•Prevent photorespiration
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C4 and CAM photosynthesis compared