It's like a gateway guard or the airplane security. It controls what gets in and out.
Yes, how else could the cell live. Cell membranes have structures (holes) in them to allow things to move in and out. These holes are special structures in the membrane and they "control" what goes across the membrane. I have made a link below to a diagram of the cell membrane to show some of these structures.
They are not holes.They are membrane proteins.
Gates function in a similar way to a cell membrane because they regulate entry and exit of people into homes just like the cell membrane controls movement of substances into and out of the cell.
The cell membrane is the thing that surrounds the cell. The cell membrane contains proteins that allow active transport of molecules in and out of the cell.
A cell membrane is a thin, flexible barrier that surrounds and protects the interior of a cell. It controls the passage of substances in and out of the cell, allowing nutrients to enter and waste products to exit. The cell membrane is composed of lipids, proteins, and carbohydrates.
It's impossible.
the answer is the cell membrane
yes
yes
Yes, how else could the cell live. Cell membranes have structures (holes) in them to allow things to move in and out. These holes are special structures in the membrane and they "control" what goes across the membrane. I have made a link below to a diagram of the cell membrane to show some of these structures.
They are called porins and help in the transfer of materials in and out of the cell.
Both membranes protect parts of the cell.
When looking at a cell as a factory, the cell membrane is like the factory outer walls.
the outer membrane
A good item for a cell membrane would be a thin plastic or cardboard
They are not holes.They are membrane proteins.
both have cell membrane