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Enzymes In Respiration
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Enzymes In Respiration

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  • 1. Enzymes in respiration Honestly – it’s the last thing you have to do on respiration!
  • 2. Oxidoreductases
    • Key enzymes in redox reactions.
    • E.g. enzymes that transfer electrons, hydrogen or oxygen from one molecule to another.
    Ethanal + NADH + H + ethanol + NAD + alcohol dehydrogenase
  • 3. Decarboxylase
    • An enzyme that catalyses the reaction to remove carbon dioxide from a molecule.
    • e.g. in anaerobic respiration
    Pyruvate ethanal + carbon dioxide decarboxylase
  • 4. Dehydrogenase
    • An enzyme that removes hydrogen from a molecule.
    • e.g. such as found during Kreb’s cycle.
    • The activity of this enzyme can be measured using an artificial hydrogen acceptor such as TTC (triphenyl tetrazolium chloride – which turns pink!)