10 A difference between the dialysis tubing used to in the l

10. A difference between the dialysis tubing used to in the lab to simulate a restrictive barrier and the phospholipid bilayers that surround living cells is: a) The phospholipid bilayer restricts movement of ions and molecules based exclusively on their size. b) The dialysis tubing restricts movement of ions and molecules based exclusively on their relative polarities. c) The phospholipid bilayer restricts movement of ions and molecules based exclusively on their relative polarities. d) The dialysis tubing restricts movement of ions and molecules based exclusively on their size. e) None of the above

Solution

d) The dialysis tubing restricts movement of ions and molecules based exclusively on their size.

Dialysis tubing is mage of cellulose membrane with specific pore size, therefore it lets out the molecules of specific size. Unlike Cell membrane it is not selectively permeable.