Problem
Consider three spheri- cal cells with diameters of 2 mm, 10 mm, and 20 mm.
• How many cells of each cell type will fit into a given volume of 30,000 cubic microns. Explain your answer.
• Assume that there are 20,000 transferrin receptors on each of these cells. A density of 500 receptors per square micron is equired for optimal absorption of transferrin. Identify the cell that will have the maximum ability to absorb transferrin. Why?