Which cell structure is the gatekeeper, controlling what goes in and out of the cell?
A) c - nucleus
B) e - vacuole
C) a - cell membrane
D) b - endoplasmic reticulum
![Which cell structure is the gatekeeper controlling what goes in and out of the cell A c nucleus B e vacuole C a cell membrane D b endoplasmic reticulum class=](https://us-static.z-dn.net/files/d34/5f131dad146bb4845e1b7b78737c9705.png)