Here's the breakdown:
* Cell membrane: This is a thin, flexible barrier that surrounds every cell. It controls what goes in and out of the cell, protecting it from the environment.
* Leaf cell: This is a type of plant cell that is found in leaves. It has a cell membrane, along with other structures like chloroplasts and a cell wall.
* Cheek cell: This is a type of animal cell that is found in the lining of your mouth. It also has a cell membrane, but it doesn't have a cell wall or chloroplasts.
Think of it like this: Your house has a door that lets people in and out. The house is the cell, and the door is the cell membrane.
