Question

Which of the following types of transport occur across the erythrocyte membrane?

A) O2 and CO2 passive diffusion
B) aquaporin water transport
C) Cl− bicarbonate ion antiport
D) glucose uniport
E) All of the above are correct.

Answer 1

All listed types of transport occur across the erythrocyte membrane, including passive diffusion of O2 and CO2, aquaporin-mediated water transport, Cl− bicarbonate ion antiport, and glucose uniport, which means all statements are correct.

Step-by-step explanation:

The types of transport that occur across the erythrocyte membrane include:

• O2 and CO2 passive diffusion: This is the movement of oxygen and carbon dioxide across the membrane without the need for energy, following the concentration gradient.
• Aquaporin water transport: Water molecules move through protein channels known as aquaporins.
• Cl− bicarbonate ion antiport: This transport involves the exchange of chloride ions and bicarbonate ions across the erythrocyte membrane.
• Glucose uniport: Glucose is transferred into cells by glucose transporters, which use facilitated transport.

Therefore, the correct answer is E) All of the above are correct.