Ions Can Move Across the Plasma Membrane in Which of the Following

Multiple Choice

Ions can move across the plasma membrane in which of the following ways?

A) through chemically- gated channels as in neuromuscular transmission
B) through voltage- gated channels as in the action potential
C) through passive or leak channels
D) by ATP- dependent ion pumps like the sodium- potassium exchange pump
E) all of the above