9_Metabolism_Anaerobic_Resp_Ferm

Images clostridium botulinum cdc calvin holding

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Images: Clostridium botulinum , CDC; Calvin holding breath, Bill Watterson From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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______ ______ ________ Many anaerobic bacteria, and muscle cells that have run out of O 2 , can make ATP by using something other than oxygen as an electron acceptor (nitrate, sulfate & carbon dioxide). In anaerobic respiration, not all the ETC is used, so less ATP is produced. Image: Electron transport chain , Tim Vickers From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Anaerobic Respiration & Farts When carbon dioxide is used as an electron acceptor, the product is either methane or acetic acid (depending on the organism). Methane produced in our gut is produced by this process. Image: Methane 3D , Ben Mills From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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______________ When there is no final __________ __________ for the ETC , the electron transport can’t happen. Fermentation is an alternative system that allows glycolysis to continue without the other steps of respiration. Not as energetically efficient as respiration. Produces only 2 ATP . ATP ATP From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Image: Glycolysis , Regis Frey From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Fermentation Yeasts and some bacteria are able to get their ATP from glycolysis by using __________ fermentation. Converts pyruvate into ethanol and carbon dioxide. Animal cells and some bacteria through the process of _____ ______ fermentation. Here pyruvate results in end product of lactic acid. The formation of carbon dioxide, a byproduct of ethanol fermentation, causes bread to rise. Images: Bread Rolls , Bangin; Dexter Jackson , Local Fitness When muscles need energy produced faster than the body can deliver oxygen, such as when lifting heavy weights, the working muscles generate energy anaerobically, through lactic acid fermentation. Two different fermentation pathways: From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Fermentation From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Why does fermentation require extra steps after glycolysis? In fermentation , after glycolysis, there are additional steps to oxidize NADH (into NAD + ).
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