EVERYDAY SCIENCE

Detailed explanation-1: -The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable.

Detailed explanation-2: -Every cell in the body is enclosed by a cell (Plasma) membrane. The cell membrane separates the material outside the cell, extracellular, from the material inside the cell, intracellular.

Detailed explanation-3: -Meaning of boundary in English. a real or imagined line that marks the edge or limit of something: The Ural mountains mark the boundary between Europe and Asia.

Detailed explanation-4: -The Plasma Membrane Its selectively permeable nature keeps ions, proteins, and other molecules within the cell and prevents them from diffusing into the extracellular environment, while other molecules may move through the membrane.

Detailed explanation-5: -The plasma membrane of the cell defines the cell boundary.