LEC 09 RespirationI - Respiration RESPIRATION Breathing A mechanism for providing ATP NADH The release of free energy by oxidation reduction

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Unformatted text preview: Respiration RESPIRATION ! Breathing ! A mechanism for providing ATP, NADH ! The release of free energy by oxidation- reduction reactions Example glucose + O 2---> CO 2 + H 2 O ! G=-673 Kcal/mole glucose Through coupled reactions, some of this free energy can be applied to the formation of ATP, NADH. Respiration Fermentation (aerobic) (anaerobic) Animals Plants Protists Fungi Some bacteria Fungi Some bacteria Animals and plants (for short periods only) Inputs glucose C 6 H 12 O 6 6 O 2 36 ADP + 36 P i Outputs 6 H 2 O 6 CO 2 36 ATP + 36 H 2 O Heat Overall reaction of respiration Glycolysis: the initial metabolism of glucose ! 10 reactions, each with its own soluble enzyme; all enzymes in endoplasm ! Converts 1 glucose (C 6 H 12 O 6 ) to 2 pyruvic acids (C 3 H 4 O 3 ) ! Partial oxidation of glucose (- 4e- ); reduction of NAD + to NADH + H + ! Forms 2 ATP (net: uses 2, produces 4) ! Produces waste heat 1 2 2 (ADP + P i ) 2 (ATP + H 2 O) 2 NAD + 2 NADH + H + Heat Glycolysis: the initial metabolism of glucose Uses ATP Makes ATP Pyruvic acid oxidation and Citric Acid Cycle...
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This note was uploaded on 07/08/2010 for the course BIS B16 taught by Professor Gerhart during the Winter '10 term at The University of British Columbia.

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LEC 09 RespirationI - Respiration RESPIRATION Breathing A mechanism for providing ATP NADH The release of free energy by oxidation reduction

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