Since the cell membrane controls movement of materials in and out of the cell, I'd say the border police because they controls what comes in the country and out of the country.
The shell is most similar to the cell membrane because it covers and surrounds the egg and it protects it. It allows heat and other things to come in and out of it.
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
the cell membrane is as flexible barrier outside of the cell.
cell surface membrane cell surface membrane
the cell membrane
cell membrane
The shell is most similar to the cell membrane because it covers and surrounds the egg and it protects it. It allows heat and other things to come in and out of it.
Dialysis tubing is often used to emulate the selective permeability of the cell membrane.
cell membrane, constituting the cytoplasm and organelles of a cell. This compartment represents the largest portion of a cell's total water content and serves as the environment for cellular processes to occur.
Cell membrane
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
the cell membrane is as flexible barrier outside of the cell.
the cell membrane
cell (plasma) membrane
The nuclear membrane of a cell is also known as the nuclear envelope.
cell surface membrane cell surface membrane
There are multiple membranes in a cell. Two of them are the cell membrane and the nucleur membrane.