biochem 011 cell respiration part 2(glycolysis, Krebs cycle, ETC, proton motive force, ATP) #22

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mikepl103
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289461
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biochem 011 cell respiration part 2(glycolysis, Krebs cycle, ETC, proton motive force, ATP) #22
Updated:
2014-11-17 12:04:31
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biochem 011 cell respiration part glycolysis Krebs cycle ETC proton motive force ATP 22
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2014,biology,biochem
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biochem 011 cell respiration part 2(glycolysis, Krebs cycle, ETC, proton motive force, ATP) #22
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  1. explain how lactic acid fermentation works
    In lactic acid fermentation, pyruvate is reduced by NAD, forming lactate as an end product, with no release of CO2
  2. what are obligate anaerobes
    carry out fermentation or anaerobic respiration and cannot survive in the presence of O2
  3. how did glycolysis come about?
    Glycolysis probably evolved in ancient prokaryotes before there was oxygen in the atmosphere
  4. true or false? Gycolysis and the citric acid cycle are major intersections to various anabolic pathways
    partially true, Gycolysis and the citric acid cycle are major intersections to various anabolic and catabolic pathways
  5. can proteins be used in either glycolysis or the KC?
    Proteins must be digested to amino acids; amino groups can feed glycolysis or the citric acid cycle
  6. can fats be used in either glycolysis or the KC?
    Fats are digested to glycerol (used in glycolysis) and fatty acids (used in generating acetyl CoA).

    Fatty acids are broken down by beta oxidation and yield acetyl CoA
  7. how do the energy outputs of a gram of fat and a gram of carb compare?
    An oxidized gram of fat produces more than twice as much ATP as an oxidized gram of carbohydrate
  8. which type of feedback mechanism is the most common mechanism for control of metabolism?
    feedback inhibition
  9. which enzyme is most critical to controlling cell respiration?
    phosphofructokinase

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