cell membrane
The cell membrane who ever is looking this up the cell membrane is what let things go in and out of the cell it is also known as the traffic cop:) if need any more answers look up the answer by typing in the search bar up above Thank you :)
There are two things. The organelle is the chloroplast, but there is also a cell wall.
The cell membrane allows only certain things to pass in and out of the cell.
Cell membrane
A filter or a gatekeeper can be a structure that allows only certain things to pass through. These structures help control and regulate what is permitted to enter or proceed.
Selectively permeable, also known as semipermeable, describes a membrane that allows only certain substances to pass through while blocking others. This selective permeability helps regulate the movement of molecules in and out of a cell or organelle.
The Plasma Membrane is a lipid bi layer that protects the cell and regulates what goes in and come out. This is accomplished by the selective permeability of the membrane, only allowing certain substances in while keeping others out.
Cell membrane
Mitochondria
It's a barrier that allows certain things to pass through it ie. water
golgi appartus
ribosomes