Question

place a single word into each sentence to make it correct.

1. alveolar gas exchange occurs in the (click to select).
2. this type of exchange is the opposite of (click to select) gas exchange.
3. as hemoglobin loads (click to select), its affinity for ( h^{+} ) declines.
4. hydrogen ions then dissociate from the hemoglobin and bind with (click to select) ions.
5. the reaction of ( h^{+} ) and bicarbonate ions (click to select) the hydration reaction and generates free carbon dioxide.

( h^{+} )
bicarbonate
chloride
inhibits
lungs
oxygen
reverses
systemic

Explanation:

1. Alveolar gas exchange occurs in the lungs. The alveoli are tiny air sacs in the lungs where gas exchange takes place.
2. Alveolar gas exchange is the opposite of systemic gas exchange. Systemic gas exchange occurs at the tissues, while alveolar gas exchange occurs in the lungs.
3. As hemoglobin loads oxygen, its affinity for \(H^{+}\) declines. This is part of the Bohr effect.
4. Hydrogen ions then dissociate from the hemoglobin and bind with bicarbonate ions. This is part of the buffer system in the blood.
5. The reaction of \(H^{+}\) and bicarbonate ions reverses the hydration reaction and generates free carbon dioxide.

Answer:

1. lungs
2. systemic
3. oxygen
4. bicarbonate
5. reverses