Campbell biology chapter 7 | Questions and Answers with complete solution

Amihipathic - a hydrophilic and hydrophobic region; phosholipid is this Fluid mosaic model - How phospholipids and proteins are arranged in the membrane of cells; membrane is a fluid structure with a mosaic of various proteins embedded or attached to a bilayer of phospholipids Integral proteins - Proteins that Penetrate the hydrophobic core of the lipid bilayer, completely embedded in the membrane, some of which are transmembrane proteins that span the membrane completely Transmembrane proteins - Span the whole membrane Peripheral proteins - Proteins that are not embedded in the lipid bilayer at all; loosely bound to the surface of the membrane Glycolipids - Membrane carbohydrates that are covalently bonded to lipids Glycoproteins - Membrane carbohydrates that are covalently bonded to proteins Davson-Dinelli sandwich - Theory that describes a phospholipid bilayer between two layers of proteins Cause of familial hypercholesterolemia - Defective LDL receptors on the cell membranes Selective Permeability depends on - Type of transport proteins that are present in membrane and bilayer, being permeable to primarly small, nonpolar molecules oligosaccharides - Cell to cell regocnition depends onFunction of cholesterol in animal cell membranes - Maintains membrane fluidity