1.3 Membrane structure

A lipid with a phosphate group in its hydrophillic head. The main consituent of cell membranes.

Phospholipid

A double layer of phospholipids that makes up cell membranes

Phospholipid bilayer

A steroid that forms an essential component of animal cell membranes.

Cholesterol

The ability of membrane to let things in and out

Permiability

A model of cell membranes in which proteins are embedded in a phospholipid bilayer.

Fluid mozaic model (Singer-Nicholson)

A model of cell membranes in which phospholipid bilayer is cover in a layer of protein.

Davson-Danielli model

Having both a hydrophilic region and a hydrophobic region

Amphipathic

Water-loving"; polar molecules (or parts of molecules) that are soluble in water

Hydrophilic

Water-fearing"; nonpolar molecules (or parts of molecules) that do not dissolve in water.

Hydrophobic

A protein with one or more carbohydrates attached.

Glycoprotein