A cell can increase how fast a substance diffuses across its plasma membrane by inserting channels, whichmodify the
A) distance across the membrane.
B) concentration gradient of the substance.
C) size and mobility of the substance.
D) membrane's permeability to the substance.
E) charge of the substance.

Question

Quizplus · Accepted Answer

By inserting channels, a cell can modify the membrane's permeability to the substance, allowing it to diffuse across more quickly. The other options may affect diffusion, but not directly through the insertion of channels.

A Cell Can Increase How Fast a Substance Diffuses Across