What is the approximate time required for a hemoglobin molecule to diffuse through a cel...

What is the approximate time required for a hemoglobin molecule to diffuse through a cell membrane? Hint: The diffusion constant D is approximately proportional to 1/r, where r is the diameter of the diffusing particle or atom. Estimate the diffusion constant of a hemoglobin molecule from the value of D for an oxygen molecule in Table 15.1.

(reference table 15.1)