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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 |