Bio 1510 - 7_1 - Bio 1510 Basic Life Bio 1510 Basic Life...

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Unformatted text preview: Bio 1510 Basic Life Bio 1510 Basic Life Mechanisms Mechanisms fall 2008 fall 2008 Dr . Rasheeda Zafar Chapter # 7 H ow Cells H ar vest H ow Cells H ar vest Ener gy Ener gy 1 Respir ation Respir ation 2 All or ganisms use cellular r espir ation cellular r espir ation to extr act ener gy fr om or ganic molecules Autotr ophs Autotr ophs Pr oduce their own or ganic molecules thr ough photosynthesis H eter otr ophs H eter otr ophs Live on or ganic compounds pr oduced by other or ganisms Respir ation Respir ation 3 Cellular Respir ation Cellular Respir ation Ser ies of r eactions Oxidations Oxidations loss of electr ons Dehydr ogenations lost electr ons ar e accompanied by hydr ogen Ther efor e, what is actually lost is a Ther efor e, what is actually lost is a hydr ogen atom (1 electr on, 1 pr oton). hydr ogen atom (1 electr on, 1 pr oton). Respir ation Respir ation 4 Dur ing r edox r eactions(oxidation-r eduction), electr ons car r y ener gy fr om one molecule to another . + Oxidation - Reduction Oxidation - Reduction 5 Respir ation Respir ation 6 Dur ing r espir ation, electr ons ar e shuttled thr ough electr on car r ier s to a final electr on acceptor . Aer obic r espir ation Aer obic r espir ation - final electr on r eceptor is oxygen 2 Aer obic Respir ation Aer obic Respir ation 7 6 12 6 2 2 2 Respir ation Respir ation 8 ATP Pr oduction ATP Pr oduction Oxidation r eaction Releases ener gy in the for m of electr ons Electr ons shuttled by + Oxidation of Glucose...
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Bio 1510 - 7_1 - Bio 1510 Basic Life Bio 1510 Basic Life...

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