Answer:

Step-by-step explanation:
Cell Membrane:
- are the outermost surface of the cell for animals and secondmost surface of the cell from plants after cell wall.
Surface of the cell membrane:
- Cell membrane is partially and selectively permeable which means that it only allows certain substances in and out of the cell.
![\rule[225]{225}{2}](https://img.qammunity.org/2023/formulas/english/college/eq413d752mwtrwwenrzwldxt4w1olmf1b3.png)