BIOL 1P91 – Final EXAM .OVER 280 QUESTIONS WITH VERIFIED CORRECT ANSWERS

BIOL 1P91 – Final EXAM .OVER 280 QUESTIONS WITH VERIFIED CORRECT ANSWERS Holds the cell together and controls what goes in and out - ANSWER cell membrane separates cell contents from the surrounding environment - ANSWER plasma membrane uptake and export of ions and molecules, cell compartmentalization, protein storing, anchoring cytoskeleton, production of ATP and NADPH, cell signalling, cell and nuclear division, and adhesion of cells to each other and to the extracellular matrix - ANSWER what are important functions of cell membranes? phospholipid bilayer - ANSWER what are biological membranes made of? protein, yet most have carbohydrates attached to lipids and proteins - ANSWER what do biological membranes ALWAYS contain? cholesterol - ANSWER what do animal cell membranes contain? phytosterols - ANSWER what do plant cell membranes contain? half of a phospholipid bilayer - ANSWER what is a leaflet? a plasma membrane that is a semi-fluid phospholipid bilayer with a mosaic of proteins - ANSWER what is the fluid mosaic model? Process of covalently attaching a carbohydrate to a protein or lipid - ANSWER What is glycosylation? cell protection - ANSWER What is the glycocalyx? integral and non-integrated proteins - ANSWER what are the two types of membrane proteins? transmembrane proteins and lipid anchor proteins - ANSWER what are the two types of integral membrane proteins the phospholipid bilayer - ANSWER transmembrane proteins span through _________ lipid - ANSWER lipid anchor proteins are the covalent attachments of a _______ to an amino acid side chain integral membrane proteins - ANSWER peripheral membrane proteins are non-covalently bound