RNR 1001 : RNR Test 1 Notes(cont)
Document Summary
Cellular respiration is a cumulative function of glycolysis, the krebs cycle, and electron transport. Glycolysis harvests chemical energy by breaking down glucose to pyruvate. Question: glycolysis is distinct from cellular respiration because: glycolysis does not occur in the mitochondria. Two types of fermentation: the two most common products of pyruvate reduction are either ethanol or lactic acid, alcohol fermentation, lactic acid fermentation. Question: how can glycolysis continue producing energy when oxygen is not present. Fermentation regenerates the nad+ needed for glycolysis by allowing pyruvate to accept electrons and h+ from nadh. How is champagne different from wine: both are the result of alcohol fermentation. Yeast is allowed to consume the sugars in grapes. Alcohol is produced in the process: with wine, this process is completed before being bottled up. With champagne, the fermentation process occurs inside the champagne bottle: this produces co2 bubbles, which pressurize inside the bottle. This is why the cork flies off when you open it.
