Question

a team member hypothesizes that the drug is incapable of diffusion and requires the help of membrane proteins to enter cells. alternatively, another member of the team hypothesizes that the drug can diffuse passively across the plasma membrane like o₂ and co₂ can. which of the following, if true about the drug, best supports the alternative hypothesis that the new drug will undergo simple diffusion across plasma membranes? a the drug is a small nonpolar molecule. b the drug is a small charged molecule. c the drug is a large - size molecule. d the drug is a large charged molecule.

Explanation:

Small non - polar molecules can passively diffuse across plasma membranes due to the non - polar nature of the lipid bilayer. Charged and large molecules generally require membrane proteins for transport.

Answer:

A. The drug is a small nonpolar molecule