Its the cell membrane (or plasma membrane), composed of phospholipid bilayer ,membrane proteins and cholesterol in eukaryotes.
the regulation is largely by way of signalling molecules that interact with specefic receptors on the membrane (mostly proteins or glycoproteins).
hope that helps
Dr. David
The phospholipid bilayer. This consists of a double layer with hydrophilic heads and hydrophobic tails. the heads face outward and the tails face each other. Think of a sandwich. The slices of bread are the heads, the meat and dressing are the tails.
The cell wall is what regulates movement of materials in and out of the cell. It is water permeable, which allows water to move into and out of the cell.
The cell membrane surounds the cell and controls what comes in and out of the cell.
Plasma membrane
The function of the cell membrane is to allow materials that are needed into the cell and the materials that are not needed and/or a waste product are taken out of the cell.
cell membrane
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.
surrounds he cell and controls what gets in or out of the cell
It is a thin layer that surrounds the cytoplasm. Its funtion is to control the movement of materials going in and out of the cell.
A cell membrane surrounds all cells and controls the movement of substances.
The function of the cell membrane is to allow materials that are needed into the cell and the materials that are not needed and/or a waste product are taken out of the cell.
cell membrane
The cell membrane controls the movement of materials in and out of the nucleus. This helps to support and homeostasis.
cell membrane
Cell Membrane
cell wall
The phospholipid bilayer. The cell membrane.
receptors (i believe)
The cell membrane controls the movement into and out of the nucleus. The cell membrane is a barrier that keeps cellular materials in and foreign objects out.
The cell membrane of a plant cell controls the movement of materials into and out of the cell, and therefore maintains homeostasis.
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.