Physiological vs
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What is the main difference between physiological and chemical buffers?

  • Physiological buffers are only found in the respiratory system, while chemical buffers are found in the renal system
  • Physiological buffers act faster than chemical buffers but have less capacity
  • Physiological buffers act more slowly than chemical buffers but have more capacity (correct)
  • Physiological buffers are only effective in resisting pH changes from strong acids, while chemical buffers resist pH changes from strong bases

    • Which system is not one of the 3 main chemical buffers?

  • Phosphate buffer system
  • Bicarbonate buffer system
  • Protein buffer system
  • Carbon dioxide buffer system (correct)

    • How does the carbonic acid-bicarbonate buffer system regulate pH changes when pH goes up?

  • Bicarbonate ion picks up a H+ ion and becomes carbonic acid, increasing H+ ions and lowering pH
  • Carbonic acid donates a H+ ion and becomes the bicarbonate ion, decreasing H+ ions and raising pH
  • Bicarbonate ion picks up a H+ ion and becomes carbonic acid, decreasing H+ ions and raising pH
  • Carbonic acid donates a H+ ion and becomes the bicarbonate ion, increasing H+ ions and lowering pH (correct)

    • What happens when the pH of the blood starts to get too low?

    <p>Bicarbonate ion picks up a H+ ion and becomes carbonic acid, decreasing H+ ions and raising pH</p> Signup and view all the answers

    Which buffer system acts within a fraction of a second to resist pH changes when a strong acid or base is added?

    <p>Bicarbonate buffer system</p> Signup and view all the answers

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