Lecture 5b

Lecture 5b - Lecture 5b Photosynthesis Chemical Cycling-...

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Lecture 5b Photosynthesis Chemical Cycling- Review Energy enters an ecosystem as sunlight and exits as heat Photosynthesis traps energy Cellular respiration harvests energy, forms ATP ATP directly Cellular Respiration-Review Production of Energy Glucose (+O2) is converted to energy (+CO2 and H2O) NEW NOTES Capturing Solar Energy 6CO 2 + 6H 2 O + Light Energy = C 6 H 12 O 6 + 6O 2 Conversion of light energy to glucose Autotrophs “self feeders” mostly plants, but also kelp, protists, and cyanobacteria Where is Photosynthesis occurring? Chloroplasts Concentrated in cells of the mesophyll (interior cells of leaves) Basic structural and functional elements Double outer membrane Stroma - semi-fluid medium where light independent reactions occur Thylakoids - disk-shaped, membranous sacs that occur in stacks called grana: site of light dependant reactions: chlorophyll, and other pigments, embedded in membranes. Light reactions-
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Lecture 5b - Lecture 5b Photosynthesis Chemical Cycling-...

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