Most ion channels exist either in an open or closed state. Active transport , in most cases, is drive by ATP hydrolysis. Chapter 10, Membrane Structure and Chapter 11, Membrane Transport of Small Molecules and the Ionic Basis of Membrane Excitability. Explain why lateral diffusion of phospholipids is faster than transverse diffusion in a membrane. Draw the structure of a typical phospholipid.
Many types of cells possess receptors that bind steroid hormones.
Explain the differences between integral and peripheral membrane proteins. Sphingomyelin, phosphatidylcholine, phosphatidylethanolamine, and phosphatidylserine are the four major phospholipids of the erythrocyte membrane. Describe the covalent modifications of lipid-linked proteins. Describe the fluid mosaic model of biological membranes. Trace the route followed by a glycoprotein, starting with its synthesis on a ribosome.