phospholipids
Chloroplast.
cholesterol molecules
The cell membrane.
The substance that keeps bone ends from crushing when compressed is Joints.
The cell membrane and cell wall keep the cytoplasm inside a cell and allows nutrients and waste products out, in fact, the cell membranes only allows what they want through, if the substance is alien to them, it will be refrained.
The purpose of a cell membrane is that it controls what passes into and out of the cell.
membrane
a membrane
The nuclear membrane keeps material in the nucleus from spilling out. There is a similar membrane that surrounds the cells as well.
If you mean the cell membrane, it keeps lets things in and out of the cell.
The cell membrane keeps out unwanted particles from the cell.
The cell membrane.
It works because of the bonesThe muscular system supports the skelatal system to keep you upright and keeps your bones from breaking as easily.
What is the word thatWhen a membrane allows some things in but keeps others out
You don't drop it?
The cell wall or membrane keeps it separate from the environment.
eat some asda smart price toffees and then buy some colgate init
the cell membrane
cytoplasm