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Questions and Answers
What is the main difference between physiological and chemical buffers?
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?
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?
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?
What happens when the pH of the blood starts to get too low?
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Which buffer system acts within a fraction of a second to resist pH changes when a strong acid or base is added?
Which buffer system acts within a fraction of a second to resist pH changes when a strong acid or base is added?
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