45. Nervous System
Neurons and Action Potentials
Multiple Choice
Multiple ChoiceWhich of the following statements is true?
A
Ion channels allow ions to cross the cell membrane against their concentration gradients.
B
All cells have an equilibrium potential, which is a difference in electrical charges across their plasma membrane.
C
Concentration gradients of proteins across the plasma membrane represent potential energy.
D
None of the listed responses is correct.
E
Ion channels are selectively permeable, permitting only certain ions to pass.
731
views
Related Videos
Related Practice
Showing 1 of 93 videos