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Stack #97608
pH and respiratory control a&P2
| Question | Answer |
|---|---|
| Respiratory control does not occur as rapidly as | chemical buffering |
| Cell metabolism generates ____ which is eliminated from the body by the lungs | CO2 |
| CO2 and water are constantly combining to form | carbonic acid |
| Inside RBC's the enzyme ________combines co2 with h2O to form ____________ | Carbonic anhydrase; H2Co3 (carbonic acid) |
| carbonic anhydrase | An enzyme that converts carbondioxide and water into carbonic acid in a reversible reaction |
| H+ and HCO-3 (bicarbonite) are also constantly combining to form | carbonic acid |
| This reaction can occur out of cells without the enzyme, but the | reaction time is much slower |
| The enzyme also catalyzes the reaction in the | reverse direction |
| If the rate of respiration decreases or if the exchange of gases in the lungs is impaired, what happens to the co2 in the plasma? | CO2 increases; can't leave the plasma, and it builds up |
| If the rate of resp decreases, what will happen to the equilibrium of this reaction? CO2+H2O ->/<- H2CO3 <-/-> HCO-3 + H(+) | Equilibrium shifts to the right and H+ increases: A co2 build-up in the plasma causes the reaction to proceed to the right and H+ concentration increases |
| If the rate of resp decreases, what will happen to the pH of the plasma | pH decreases; because H+ is being generated the plasma become more acidic and the pH decreases. |
| If the resp rate increases to above normal what happens to the co2 in the plasma | CO2 decreases; exhaled |
Created by:
tamiboren
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