The outer membrane of a neuron is semipermeable.This means that:
A) a very specific number of sodium ions are allowed to cross the membrane.
B) the fluid outside the membrane is positively charged.
C) some substances,but not others,can pass through the membrane.
D) the membrane must be depolarized before any particles can pass through it.

Question

Quizplus · Accepted Answer

Semipermeable means that some substances can pass through the membrane, while others cannot. It does not specify a specific number of sodium ions allowed to pass, or a positive charge in the fluid outside the membrane. Depolarization is related to the transmission of electrical signals within the neuron, but it is not a requirement for particles to pass through the membrane. Therefore, the correct choice is C.

The Outer Membrane of a Neuron Is Semipermeable