The cell membrane is a protein-studded phospholipid bilayer that not only protects our cells, but also regulates what goes in and out. In this episode of Crash Course Biology, we’ll look at the structure of the bilayer, learn about its...

The plasma membrane is a complex structure made up of macromolecules that come together to form a fluid mosaic. In this video, we will look at the structure, properties and functions of the fluid mosaic model.

This brief video tutorial briefly discusses cell membrane transport: 0:00​​. Introduction 0:15. Permeability of cell membrane 2:57. Diffusion - 3:08. Simple diffusion - 3:37. Facilitated diffusion (ion leak channels, voltage gated...

In this video, we will discuss the differences between primary and secondary active transport by looking at a few specific transport mechanisms.