Peripheral proteins

Lipid Bilayer: A double layer of phospholipids that forms the core structure of all cell membranes, providing a barrier that marks the boundaries of a cell.

Integral Proteins: Proteins that are permanently attached to the cell membrane and typically span across the entire lipid bilayer, playing critical roles in transport and signal transduction.

Cell Membrane: The semi-permeable membrane surrounding the cytoplasm of a cell, which regulates entry and exit of substances, maintaining the internal environment of the cell