BSCI170: Anaerobic Respiration

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8 Terms

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Fermentation definition

series of reactions carried out to regenerate NAD+ for glycolysis without oxygen

  • to get more NAD+, you REDUCE pyruvate

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What are the 2 types of fermentation we are learning about?

  • lactic acid fermentation

  • alcohol fermentation

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Lactic acid fermentation examples

  • red blood cells bc they have no mitochondria

  • muscle cells when we overexert the

  • dairy like yogurt and cheese

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examples of alcohol fermentation

  • alcohol making

  • yeast (bread)

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2 steps of lactic acid fermentation

  • Glycolysis (Still happens the same way)

  • lactic acid fermentation

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What happens in lactic acid fermentation

Pyruvate turns into lactic acid and 2 NADH go into the reaction and 2 NAD+ come out

Product:

  • 2 lactic acid

  • 2 NAD+

  • 2 ATP (from glycolysis)

<p>Pyruvate turns into lactic acid and 2 NADH go into the reaction and 2 NAD+ come out</p><p></p><p>Product:</p><ul><li><p>2 lactic acid</p></li></ul><ul><li><p>2 NAD+</p></li><li><p>2 ATP (from glycolysis)</p></li></ul><p></p>
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Steps of alcohol fermentation

pyruvate turns into acetaldehyde, producoing CO2 in the process. The acetaldehyde turns into ethanol, producing NAD+ in the process

<p>pyruvate turns into acetaldehyde, producoing CO<sub>2</sub>&nbsp;in the process. The acetaldehyde turns into ethanol, producing NAD+ in the process</p>
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Examples of anaerobic respiration in prokaryotes

  • Sulfate reducing prokaryote uses SO4 as final electron receptor and produce H2S

  • Methanogens produce methane and use CO2 as final electron acceptor

  • Nitrate-reducing  bacteria uses NO3 as final electron acceptor