A mixed solution of water and small molecules is exposed to a cell membrane and allowed to interact for an hour.Which molecule would be most likely to cross the phospholipid bilayer without the aid of transport proteins and diffuse across the membrane the fastest? A)Water B)NH₄⁺ C)NH₃ D)CH₃COO^-

Question

Quizplus · Accepted Answer

NH₃ (ammonia) is a small, nonpolar molecule that can easily diffuse across the phospholipid bilayer without the need for transport proteins, making it the most likely to cross the membrane quickly.

A Mixed Solution of Water and Small Molecules Is Exposed