A window frame
The outer boundary of a cell is called the cell membrane, and is composed of a phospholipid bilayer.
The outer boundary of a plant cell is the cell wall.
Outer dynamic boundary is cell membrane. Outer boundary is cell wall
The outer boundary of an animal cell is the cell membrane.
cell surface membrane cell surface membrane
The outer boundary of a general animal cell is the cell membrane.
The boundary between the mantle and core is called the core-mantle boundary. This region is marked by a significant change in density and composition, representing the transition from the solid mantle to the liquid outer core of the Earth.
It depends if the cell is an animal or plant cell. If it is an animal cell then the cell membrane is the outer boundary. If it is a plant cell then the cell wall is the outer boundary.
Cell membrane
The cell structure that forms the outer boundary of plant cells is the cell wall. It is a rigid, protective layer made up of cellulose that provides structural support and protects the cell from physical damage.
The boundary between the middle and inner ear is marked by the oval window and round window. The oval window connects the middle ear to the inner ear via the stapes bone, while the round window helps dissipate sound waves within the inner ear.
The flexible outer boundary of the cell is called the cell membrane or plasma membrane. It acts as a barrier, controlling the movement of substances in and out of the cell. The cell membrane is composed of a double layer of phospholipids with embedded proteins.