Plasma membranes are selectively permeable. This means that
A. anything can pass into or out of a cell as long as the membrane is intact and the cell is healthy.
B. the plasma membrane allows some substances to enter or leave a cell more easily than others.
C. glucose cannot enter the cell.
D. plasma membranes must be very thick.
Answer:B
Plasma membranes are selectively permeable. This means that
A. anything can pass into or out of a cell as long as the membrane is intact and the cell is healthy. B. the plasma membrane allows some substances to enter or leave a cell more easily than others. C. glucose cannot enter the cell. D. plasma membranes must be very thick.