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AP Biology
definition
| Term | Definition |
|---|---|
| membrane structure | phospholipids arranged in bilayer globular protein |
| fluid mosaic model | mosaic of protein's floats in/on the fluid lipid bilayer like boats on a pond |
| mosaic | all jumbled together, bunch of different things |
| glycolipid | chain of lipids hanging |
| glycoprotein | chain of proteins hanging with sugars |
| phospholipid bilayer | flexible matrix, barrier to permeability |
| trans membrane proteins | integral membrane proteins |
| interior protein network | peripheral/intracellular membrane proteins |
| cell surface markers | glycoproteins and glycolipids |
| phospholipids | glycerol, 2 fatty acids, and a hydroxyl group |
| transporters | transport |
| enzymes | make or break bonds |
| trans membrane domain | spans the lipid bilayer hydrophobic amino acids arranged in a helices |
| pores | extensive nonpolar regions with a trans membrane protein can create a pore through the membrane |
| B barrel (alpha) | cylinder of alpha sheets in the protein secondary structure |
| diffusion | movement of molecules from high to low concentration |
| transport across membranes | major barrier to crossing biological membrane, hydrophobic interior that repels polar molecules but not nonpolar molecules |