Question

question 29
oxygen enters blood from alveolar air because the partial pressure of alveolar air is
less than the partial pressure of incoming blood.
greater than the partial pressure of incoming blood.
the same as the incoming partial pressure of blood.
none of the above.
question 30
a right shift of the oxygen - hemoglobin dissociation curve due to increased partial pressure of carbon dioxide is also known as
the bohr effect.
the haldane effect.
daltons law.
charles law.

Explanation:

• Question 29: Gas exchange occurs based on partial pressure gradients. Oxygen moves from an area of higher partial pressure (alveolar air) to an area of lower partial pressure (incoming blood).
• Question 30: The Bohr effect is defined as the right - shift of the oxygen - hemoglobin dissociation curve due to increased \(PCO_2\). The Haldane effect is related to the effect of oxygen on carbon dioxide transport. Dalton's law is about the sum of partial pressures in a gas mixture. Charles' law is about the relationship between volume and temperature of a gas.

Answer:

• Question 29: greater than the partial pressure of incoming blood.
• Question 30: the Bohr effect.