Explanation:
Cell membranes are selectively permeable. Some solutes cross the membrane freely, some cross with assistance, and others do not cross at all. A few lipophilic substances move freely across the cell membrane by passive diffusion. ... Large molecules do not cross intact cell membranes, except in certain special cases.
Answer:
urinary bladder, large intestine, stomach, small intestine, right lung
Answer:
4? am aint sure sorry,but base on the website 4
