Which of the Following Most Accurately Describes Selective Permeability

Multiple Choice

Which of the following most accurately describes selective permeability?

A) An input of energy is required for transport across the membrane.
B) Charged molecules pass through a membrane.
C) There must be a concentration gradient for molecules to pass through a membrane.
D) Only certain molecules are able to cross a cell membrane.
E) Amphipathic molecules pass through a membrane.