2.2.5 biochemistry of respiration

2.2.5 BIOCHEMISTRY OF RESPIRATION Anaerobic Glycolysis Glucose (6-C Sugar) ATP C 6 H 12 O 6 + 6O 2 → ENERGY + 6CO 2 + 6H 2 O 2 X Pyruvate (3-C) Lactic acid (in animals) OR Ethanol + CO 2 (in plants) GLYCOLYSIS CYTOSOL Aerobic Respiration OXYGEN must be present Stage 1 Stage 2 NB : Anaerobic respira tion may occur in t he presenc e of oxygen but does not use oxygen . Acetyl Co-enzyme A (2-C) Kreb’s Cycle Role of NAD: It traps and transfers electrons and hydrogen ions. ATP ~ e ¯ ~ e ¯ ~ e ¯ H + H + H + CO 2 CO 2 ADP NAD NADH Electron Transport System NADH 2 Carrier 1 3 4 O 2 H 2 O ADP+P ADP+P ADP+P ATP ATP ATP M I T O C H O N D R I O N Waste products Fate of Waste Products CO 2 H 2 O Plants Excreted OR Used in Photosynthesis Transpired OR Used in Photosynthesis Animal Excreted via Excreted via CO 2

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2.2.5 Biochemistry of Respiration . CYTOSOL. GLYCOLYSIS. C 6 H 12 O 6 + 6O 2 → ENERGY + 6CO 2 + 6H 2 O. ATP. Anaerobic Glycolysis. Stage 1. Glucose (6-C Sugar). NADH. NB : Anaerobic respiration may occur in the presence of oxygen but does not use oxygen . Kreb’s Cycle. 2. H 2 O. - PowerPoint PPT Presentation

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Biochemistry of Respiration

2.2.5 Biochemistry of Respiration Anaerobic GlycolysisGlucose (6-C Sugar)ATPC6H12O6 + 6O2 ENERGY + 6CO2 + 6H2O2 X Pyruvate (3-C)Lactic acid (in animals) OR Ethanol + CO2 (in plants)GLYCOLYSISCYTOSOLAerobic RespirationOXYGEN must be presentStage 1Stage 2NB: Anaerobic respiration may occur in the presence of oxygen but does not use oxygen.Acetyl Co-enzyme A (2-C)Krebs CycleRole of NAD: It traps and transfers electrons and hydrogen ions.ATP~e~e~eH+H+H+CO2CO2ADPNADNADHElectron Transport SystemNADH2Carrier 134O2H2OADP+PADP+PADP+PATPATPATPMITOCHONDRIONWaste products Fate of Waste ProductsCO2H2OPlantsExcreted OR Used in PhotosynthesisTranspired OR Used in PhotosynthesisAnimalsExcreted via LungsExcreted via Kidneys

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