This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: fluid mosaic model . A membrane is a fluid structure with proteins embedded or attached to a double layer of phospholipids. 1. Membrane models have evolved to fit new data Models of membranes were developed long before membranes were first seen with electron microscopes in the 1950s. In 1895, Charles Overton hypothesized that membranes are made of lipids because substances that dissolve in lipids enter cells faster than those that are insoluble. Twenty years later, chemical analysis confirmed that membranes isolated from red blood cells are composed of lipids and proteins. Attempts to build artificial membranes provided insight into the structure of real membranes....
View Full Document