Select the favorable conditions required for the formation of oxyhemoglobin at the alveoli.

Question

Question

Answer 1

Concept:

Hemoglobin is a respiratory pigment that transports both oxygen and carbon dioxide.
About 98 percent of oxygen is transported with the help of hemoglobin.
One hemoglobin molecule binds to four oxygen molecules.

Explanation:

The partial pressure of oxygen is highest in the alveoli.
In alveoli, oxygen binds to hemoglobin to form oxyhemoglobin.
Different factors affect the binding of oxygen with hemoglobin.
Favorable conditions for the formation of oxyhemoglobin are-high partial pressure of oxygen, low partial pressure of carbon dioxide, low temperature, and less hydrogen ion concentration.
Hemoglobin has an affinity for both oxygen and carbon dioxide.
The decreased partial pressure of carbon dioxide increases the affinity of binding oxygen with hemoglobin.
High pH or less of hydrogen ion causes deprotonation and thus stabilizes the hemoglobin and increases the oxygen binding affinity with hemoglobin.
These conditions are present in alveoli and thus promote the formation of oxyhemoglobin.
The binding of oxygen with hemoglobin can be explained using an oxygen-dissociation curve.

So, the correct answer is 4.