Why is the cell membrane described as being selectively permeable?
a. it allows anything to enter and exit the cell.
b. it allows nothing to enter or exit the cell.
c. it allows only water to enter the cell.
d. it allows needed materials to enter the cell and wastes to leave the cell.

It allows needed materials to enter the cell and wastes to leave the cell.

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

i wish i could with all of them i can barley see the first one so here's the answer to the first one b