For animal cells it is the cell membrane, for plant cells it is the cell wall.
Membrane
What seperates the internal composition and the Cytoplasme (the liquid inside the cell holding all parts or organisms of the cell in place) of the cell from the external is the plasmic membrane. This membrane has many functions as it's strcuture helps it to move or squeeze into places the cell needs to go.
Cell Membrane.
Cells are surrounded by a cell membrane, also known as the plasma membrane. This thin, semi-permeable barrier separates the contents of the cell from its external environment while controlling the passage of substances in and out of the cell.
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.
Membrane
Interior and the Exterior of a [the] Cell.
What seperates the internal composition and the Cytoplasme (the liquid inside the cell holding all parts or organisms of the cell in place) of the cell from the external is the plasmic membrane. This membrane has many functions as it's strcuture helps it to move or squeeze into places the cell needs to go.
The cell membrane separates the cell from its surroundings and controls what can enter and exit the cell through a selective barrier called the lipid bilayer. This barrier allows certain substances, such as nutrients and waste, to pass through while blocking others.
Cell Membrane.
It separates the cell from its surroundings and acts as a selective barrier to the passage of substances in and out of the cell
The cell membrane is the outer part of the cell that separates the interior from all the other cells from the outside environment.
a cell This could be a cell, but it could also be a specimen. The question is not sufficiently definite.
The cell part that contains the external boundary of the cell is the cell membrane. It acts as a barrier that separates the cell from its surroundings and regulates the passage of substances in and out of the cell.
I'm assuming that you're talking about Lipids. It separates the cell from its surroundings and acts as a barrier.
The cell membrane is also known as the plasma membrane or the cytoplasmic membrane. It is a biological membrane that separates all cells' interior from the outside, though can be permeated by selection ions and molecules. Its basic function is to protect the cell from its surroundings.
The cell's nucleus is surrounded by a nuclear membrane, also known as the nuclear envelope. This double membrane structure separates the contents of the nucleus from the cytoplasm of the cell and helps regulate the passage of molecules in and out of the nucleus.