The term concentration gradient refers to a difference in the
A)number of two different ion types within the neuron.
B)number of ions found on opposite sides of the cell membrane.
C)permeability of the membrane to one kind of ion compared to another.
D)permeability of the membrane at rest compared to during an action potential.

Question

Quizplus · Accepted Answer

Concentration gradient refers to the difference in the number or concentration of a substance on one side of a cell membrane compared to the other side. This can be seen in the difference in the number of ions, molecules, or particles on opposite sides of the membrane. Therefore, option B is the correct choice. The other options, including the number of ion types or permeability of the membrane, may be related to ion movement, but do not directly refer to a concentration gradient.

The Term Concentration Gradient Refers to a Difference in the