The Boundary Between the Inside and Outside of a Cell

Question

The boundary between the inside and outside of a cell is provided by the
A) Cell membrane
B) Endoplasmic reticulum mem brane
C) Mitochondrial membrane
D) Nuclear Envelope
E) Cytoskeleton

Accepted Answer

The cell membrane, also known as the plasma membrane, is the structure that encloses the cell, separating its interior from the external environment and thus serving as the boundary between the inside and outside of a cell.