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AP Biology Ch. 10. Is everywhere (Light is a form of electromagnetic radiation)…

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Presentation on theme: "AP Biology Ch. 10. Is everywhere (Light is a form of electromagnetic radiation)…"— Presentation transcript:

1 AP Biology Ch. 10

2 Is everywhere (Light is a form of electromagnetic radiation)…

3 All energy on earth comes from the sun* To convert light energy into chemical energy we depend on: Plants (chloroplasts) Protists (chloroplasts) Cyanobacteria (cell membrane)

4 Mesophyll cells: Contain many chloroplasts for photosynthesis Stoma cells: Guard cells allow for gas exchange

5 Thylakoids: Disk-like structures filled with chlorophyll Stroma Surrounding fluid

6 A pigment which absorbs electromagnetic radiation

7 Absorbs two wavelengths of light: Blue: 420 nm Red: 660 nm

8 CO 2 + H 2 O  C 6 H 12 O 6 + O 2 carbon dioxide + water  glucose + oxygen

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10 Sunlight strikes the PSII and excites electrons Excited electron splits H 2 O into H+ ions and O 2 gas

11 Electrons flow through a series of membrane proteins moving H+ ions across the membrane

12 Sluggish electrons receive another photon of light in PSI Excited electrons are passed to NADP changing into NADPH

13 Collection of H+ ions pass through ATP synthase ADP is converted into ATP

14 http://highered.mcgraw- hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/007243 7316/120072/bio13.swf::Photosynthetic%20Electron%20Transport%20and %20ATP%20Synthesis http://highered.mcgraw- hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/007243 7316/120072/bio13.swf::Photosynthetic%20Electron%20Transport%20and %20ATP%20Synthesis

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16 NADPH & ATP generated in light reactions run the Calvin Cycle CO 2 is converted into G3P through a series of reactions

17 Many cycles produce glucose (C 6 H 12 O 6 ) in stroma

18 http://highered.mcgraw- hill.com/sites/0070960526/student_view0/chapter5/animatio n_quiz_1.html http://highered.mcgraw- hill.com/sites/0070960526/student_view0/chapter5/animatio n_quiz_1.html

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20 Average: http://www.youtube.com/watch?v=ytLJFYyfLV8&safety_mode =true&persist_safety_mode=1 http://www.youtube.com/watch?v=ytLJFYyfLV8&safety_mode =true&persist_safety_mode=1 Awesomeness: http://www.youtube.com/watch?feature=endscreen&NR=1&v= x-t0sGyjfto http://www.youtube.com/watch?feature=endscreen&NR=1&v= x-t0sGyjfto


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