Because the plasma membrane has tiny pores in it for the transport of substances in and out of the cell. The plasma membrane is a selectively permeable membrane. While it allows most substances to enter into the cell, but it also prevents the entry of other substance
Answers & Comments
Answer:
Because the plasma membrane has tiny pores in it for the transport of substances in and out of the cell. The plasma membrane is a selectively permeable membrane. While it allows most substances to enter into the cell, but it also prevents the entry of other substance