Lecture%203%20Solar%20energy%20and%20the%20carbon%20cycle%20finished1

Lecture%203%20Solar%20energy%20and%20the%20carbon%20cycle%20finished1

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Lecture 3 Solar energy and the carbon cycle
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Living biomass consists of Plant Animal Heterotrophic microbe Water + + + Carbohydrate + + + Glucose + + + Sucrose + Starch + Cellulose + Glycogen + + Fats + + + Proteins + + + Nucleic acids + + + Secondary compounds + + +
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Solar Energy: the Carbon Cycle Photosynthesis Respiration Decomposition Fire
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6 CO 2 + 6 H 2 O + light = C 6 H 12 O 6 + 6O 2 Glucose Arguably the most important chemical equation for life Energy from light used to create chemical energy Chemical energy (ATP and NADPH) used to “fix” CO2
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Photons are collected by molecular complexes. This triggers the release of electrons along transport chains and allows the creation of ATP and NADPH
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Calvin cycle ATP and NADPH are transferred into the stroma of the chloroplast and catalyze the Calvin cycle. Light reactions and carbon fixation are linked by ATP and NADPH.
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Respiration Cellular respiration Organic compounds are broken down to release energy.
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