The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a semipermeable biological membrane that …

Nov 27, 2025 · The cell membrane acts as a barrier, keeping the cell’s constituents in and unwanted substances out, while also allowing transport of essential nutrients into the cell and …

This page covers cellular membranes as selective barriers, detailing the role of proteins in molecular transport. It explains how carrier proteins bind to and transport specific hydrophilic …

2 days ago · The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. In bacterial and plant …

Aug 3, 2025 · Though often overshadowed by more glamorous components like the nucleus or mitochondria, the cell membrane—also known as the plasma membrane—is nothing short of …

This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out. Structure and Composition of the Cell Membrane The cell membrane is an …

Jul 22, 2025 · Explore the cell membrane’s design, a dynamic structure that controls molecular passage, facilitates communication, and provides essential cellular support.

The cell membrane of the cell is a phospholipid bilayer containing many different molecular components, including proteins and cholesterol, some with carbohydrate groups attached.

We will first investigate the anatomy of the cell membrane and then continue on to study the physiology of membrane transport. The phospholipid bilayer is the main fabric of the membrane.

Scientists who model membrane structure and dynamics describe the membrane as a fluid mosaic in which transmembrane proteins can move laterally in the lipid bilayer.