2007-11-12 07:29:03 · 4 answers · asked by Emily boo 2 in Science & Mathematics ➔ Biology
Active transport, passive transport, pinocytosis, phagocytosis, signal transduction.
2007-11-16 03:43:29 · answer #1 · answered by Ishan26 7 · 0⤊ 0⤋
without a membrane, a cell cannot control its internal environment and keep itself in and everything else out. imagine that youdidnt have any skin to hold your guts inside. all the fluids and organs that make up your internal structure would be free to escape to the outside world as well as letting anything and everything that wants in to settle down in your innerds.
it functions primarily as a barrier to the outside world, but it also is permeable to necessary nutrients and wastes so as to function as a selective gate rather than a wall.
2007-11-12 07:34:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Like they said, it determines what is allowed to pass through or not. It serves as a barrier for the movement of substance into and out of the cell.
2007-11-12 08:48:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋
it is semi-permeable. it determines what can and cannot pass through the membrane into the cell
2007-11-12 07:38:42 · answer #4 · answered by hockey_is_life77 2 · 0⤊ 0⤋
it depends what cells you are talking about. in general it would be the white bloods cells.-blurey
2016-03-14 10:59:40 · answer #5 · answered by Anonymous · 0⤊ 0⤋