Lecture_Classes__fifteen

Lecture_Classes__fifteen - Photosythesis: Energy from...

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1 Photosythesis: Energy from sunlight Similar to the electron train transport system in mitochondria. Uses high energy electron to drive a electrochemical gradient and generates NADPH + H+ and ATP for biosynthesis
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2 Plants take in CO 2 and release O 2 and water NADH +H + + ATP NAD+ + ADP + Pi Two sources of oxygen: CO 2 and H 2 O O H O O H C O H CO 2 2 6 12 6 2 2 6 6 12 6 + + + ET
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3 Figure 8.3 An Overview of Photosynthesis
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4
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5 Today’s topics I. Bacterial Photosystems II. Plant Photosynthesis III. The Calvin Cycle IV. Rubisco enzyme
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I. Bacterial Photosystems Some primitive Bacteria used cyclic photosynthesis. Only produces ATP (no reducing agents, like NADH) No outside source of electrons (no splitting of H2O) Other Bacterial evolved to use a non-cyclic photosynthesis. Produces ATP and NADPH + H+ Used sulfur containing compounds as electron source. Plants used both
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This note was uploaded on 03/29/2008 for the course CEM 251 taught by Professor Rathke during the Spring '07 term at Michigan State University.

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Lecture_Classes__fifteen - Photosythesis: Energy from...

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