25. Hereditary spherocytosis (HS) is a disorder of red blood cells that causes the cells to be smaller and spherical instead

Question

25. Hereditary spherocytosis (HS) is a disorder of red blood cells that causes the cells to be smaller and spherical instead of having the usual flattened, biconcave shape. The average diameter of normal red blood cells is 7.2μm, and the average diameter of red blood cells in a person with HS was found to be 6.7μm. The normal red blood cell has an average surface area of 136μm² and an average volume of 91 μm².
Which of the following provides an accurate calculation of the surface area to volume ratio of an HS red blood cell, as well as a prediction of its effect on the efficient transferring of oxygen compared to a normal red blood cell?
a. The ratio is 0.45, and the cells are more efficient at transferring oxygen.
b. The ratio is 1.12, and the cells are less efficient at transferring oxygen.
c. The ratio is 0.89, and the cells are less efficient at transferring oxygen.
d. The ratio is 141, and the cells are more efficient at transferring oxygen.

Kunduz · Accepted Answer

Click to see the answer