Professor Rhodus is lecturing about selective permeability of neurons. What would he tell the class?
A) All ions can only travel in one direction across the membrane.
B) All molecules must cross the membrane via a designated channel.
C) Only certain molecules can cross the membrane freely.
D) Only sodium and potassium ions can cross the membrane.

Question

Quizplus · Accepted Answer

Professor Rhodus would explain that the selective permeability of neurons means that only certain molecules can pass freely through the membrane while others require specific channels or transporters. This is achieved through the presence of ion channels and transporters that selectively allow ions and other molecules to pass through the membrane based on factors such as size, charge, and chemical properties. Therefore, choice C is the best answer to this question. Choices A, B, and D are incorrect because they do not accurately reflect the concept of selective permeability of neurons.

Professor Rhodus Is Lecturing About Selective Permeability of Neurons