Question

what are membranes like the cell membrane that allow some molecules to pass through it called?
a) permissive
b) actively permeable
c) permeable
d) semipermeable

Explanation:

Membranes that only allow specific molecules to pass through, like the cell membrane, are defined by the term that reflects their partial permeability. "Permissive" is not a standard term for this property, "actively permeable" refers to energy-dependent transport (not the membrane's general property), and "permeable" means all substances can pass through, which is incorrect.

Answer:

d) Semipermeable