Cell Membrane | Med Intro 🧬
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An ATP-driven pump establishes a sodium gradient that drives another solute through a symporter. The second solute undergoes:
Uniporters: one or more molecules same direction
Symportes:two or more molecules in one direction
Antiporters:two or more molecules opposite directions
What distinguishes facilitated diffusion from primary active transport?
Which substance can readily cross a lipid bilayer by simple diffusion?
How can tight junctions affect lateral diffusion of membrane proteins?
A protein is covalently attached to a membrane lipid. What is it?
A protein crosses the bilayer using hydrophobic alpha helices. How is it classified?
In a phospholipid bilayer, where do the hydrophobic tails point?
Why do membranous organelles form separate compartments?
Where are the carbohydrate chains of the cell surface glycocalyx located?
