BIOL 1090 Lecture Notes - Lecture 15: Lipid Raft, Light-Independent Reactions, Glycocalyx
10 Apr 2018
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Document Summary
Lipid rafts: plasma membrane micro domains with higher cholesterol content and lipid associated proteins. Ion channels are gated and can be activated by voltage, ligands, or mechanical means. Active transporters use energy to move molecules from lower to higher concentration. Glycocalyx- assembly of carbohydrate groups attached to proteins and lipids on the outside of the plasma membrane. Many cells of multicellular organisms contact an extracellular matric. An organized network of material produced and secreted by cells. Components are produced by cells and assemble into a network. Cells of bacteria, plants and fungi have walls. Cell walls are composed of cellulose micro fibrils embedded in a polysaccharide matrix. Provide structural support to cell and to organism as a whole. Protect cell from mechanical damage and pathogen attack. High energy electrons pass from coenzymes in the matrix to electron carries in imm. Energy transfers at each complex used to pup protons from matrix into intermembrane space.
