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Lab 5_Cellular Respiration and Fermentation_student_2011

Lab 5_Cellular Respiration and Fermentation_student_2011 -...

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Lab 5: CELLULAR RESPIRATION AND FERMENTATION
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Respiration Cellular processes which transfer energy in glucose bonds to bonds in ATP Aerobic Respiration : uses O 2 (up to 38 ATP) Glycolysis , TCA cycle and ETC Fermentation : anaerobic (2ATP) Glycolysis , then conversion of pyruvate to EtOH or lactate Involves re-dox reactions (LEO says GER!) Reduction- gain of electrons Oxidation- loss of electrons NAD+ conenzyme responsible for transferring electrons in glycosis and fermentation Anaerobic Respiration
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Glycolysis Glucose broken down to form pyruvate Reduction of NAD+ to NADH & Net gain of 2 ATP Everything here X2
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Fermentation (anaerobic respiration) Regeneration of NAD+ 2 main types: 1. Lactic acid - pyruvate reduced to lactate and NADH is oxidized NAD+ 2. Alcoholic ….next slide
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Alcoholic Fermentation 2 ADP 2P i 2 ATP CO2 Glucose Glycolysis 2 Pyruvate 2 Acetaldehyde 2 NADH 2 NAD+ ethanol steps: Pyruvate releases a CO 2 and forms acetaldehyde Then acetaldehyde is reduced to ethanol and NADH is oxidzed NAD+
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Experiment A: Alcoholic fermentation Fermentation tube
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