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MBB231 L9

QuestionAnswer
partition coefficient equilibrium constant for a substance dispersion between oil and water
what is a channel water filled pore that allow small, hydrophailic molecules to diffuse through membrane, usually gated
what is a carrier alters between 2 conformations that transfer small molecules across the membrane
characteristics of membrane carrier proteins transmembrane segments, made of alpha helices, multiple membrane spanning regions
simple diffusion movement of nonpolar and small molecules down the [gradient], linear nonsaturating relationship
passive/facilitated diffusion spontaneous movement down a concentration gradient
active transport movement against a concentration gradient at the expenditure of energy
what is the function of glucose transporter transport glucose
how does glucose/Na+ syn-porter function? use Na concentration to drive glucose from the gut lumen to outside
how does glucose/Na porter work together to bring dietary glucose into bloodstream glucose/Na porter drive glucose into intestinal region which glucose is transported into blood via glucose transporter
significance of different Kt/Km values for glucose transporters prevent liver from taking all the glucose
symporter and example move in same direction: ie glucose/Na+
antiporter and example move in opposite direction: ie Na+/K+
mechanism of Na+/K+ pump move 3 Na+ out, conformation change, as Na+ leave, 2 K+ binds, change back to original form and release K+ inside cell
P-class pump one or more ATP binding site, at lease one phosphorylates
V-class pump >1 ATP binding site, maintains acidity
F-class pump >1 ATP binding site, forms ATP
Created by: rain9119
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