CHEM-UA 109 Lecture Notes - Lecture 12: Fluid Mosaic Model, Glycolipid, Glycoprotein
16 Aug 2016
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Cell membranes: selective permeability, cells regulate what comes in and goes out, does this using cell membrane, fluid mosaic model a. i. Everything moving, very complex, peripheral proteins are floating along surface (if not fluid, things couldn"t pass through) a. ii. Keeps phospholipids from drifting too quickly when it gets very hot, the membrane would fall apart. When it gets too cold, keeps the membranes from getting too close. a. ii. 2. Glycoprotein antibodies (important in immune response) a. ii. 3. Glycolipid a fat with sugars attached on outside (important in signaling) a. iii. Protein that allows water to move through a. iii. 2. b. Most made up of hydrocarbon no charge (nonpolar) a. iv. 1. a. i. Water wont be able to pass through easily a. iv. 1. b. Head with a charge result of phosphate group it has (polar) a. iv. 1. b. i. Hydrophilic a. iv. 1. b. i. 1. water will be attracted to membrane a. iv. 2. Small and uncharged a. iv. 2. a. i. e. co2, o2 (no charge, small: cell wall, structure rigidity a. i.
