BIOL 1090 Lecture Notes - Lecture 7: Scanning Electron Microscope, Membrane Fluidity, Lipid Bilayer
26 Aug 2017
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Cell theory: the cell is the structural unit of life: all organisms are composed of 1 or more cell types, cells can arise only from pre-existing cells. Integral membrane proteins span the lipid bilayer: lipid-anchored proteins attach to a lipid in the bilayer associated with lipids, but not penetrating the bilayer, peripheral membrane proteins associate with the surfaces of the lipid bilayer. Biological membranes are asymmetrical two leaflets have distinct lipid composition differe(cid:374)t i(cid:374) ter(cid:373)s of what"s a(cid:374)(cid:272)hored to it: outer leaflet often contains glycolipids and glycoproteins (glycol = carbohydrate attached) 2: 3 tenants of the cell theory, all organisms are composed of one or more cells, the cell is the basic organizational unit of life, all cells arise from pre-existing cells. Possess a genetic program and the means to use it. Carry out a variety of chemical reactions. 1. 3: two fundamentally different classes of cells: pg.
