The Plasma Membrane of a Neuron Is More Permeable to Potassium

Multiple Choice

The plasma membrane of a neuron is more permeable to potassium ions because

A) of its positive electrical charge.
B) there are more leak ion channels for K+ than Na+.
C) protein molecules cannot exit through the cell membrane.
D) calcium ions block Na+ and Cl- channels.
E) there are more leak ion channels for Na+ than K+.