The biconcave shape of red blood cells
A) increases the surface area of the red blood cell.
B) makes it easier for gases to move into and out of the cell.
C) allows for bending or folding of the cell.
D) enables it to pass through small blood vessels more easily.
E) All of these are correct.

Question

Quizplus · Accepted Answer

The biconcave shape of red blood cells increases their surface area, which in turn facilitates gas exchange. The concave shape also allows for bending or folding of the cell, which enables them to deform and pass through narrow capillaries and small blood vessels. Therefore, all these options are correct.

The Biconcave Shape of Red Blood Cells