Lecture 8: Omnivores

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4 Terms

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Cats

  • Obligate carnivores

  • Need protein to digest sugar

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Carnivores

  • Low production of amylase (since little carbs are digested)

  • Produce glucose via gluconeogenesis

    • Convert amino acids to glucose

    • Slow, expensive energy-wise

  • Then use normal cell resp.

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Gluconeogenesis

  • Done in liver

  • Deamination of amino acids

  • Carbon skeleton converted to pyruvate

  • Pyruvate → Reverse glycolysis → Glucose

  • Costs 6 ATP, glycolysis costs 2 ATP, generates 4 ATP

  • Gluconeogenesis energy cost > Glycolysis energy production

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What happens to vitamins?

  • Fats-soluble are deposited

  • Water-soluble vitamins pass through