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Active Transport/ Bulk Flow/Filtration
principles of transport
11 cards·by browncl4
Active diffusion require_____to move molecule___a gradient.
specific energy expediture, against
In active transport ___ is used to "pump" materials across membranes; the only way to ___or
___against a gradient.
ATP; absorb, secrete
In active transport ___ required for movement. (Thus a type of ____=uses a "helper")
carrier molecule, mediated transport
Active to tranport is important to ____across membranes.
maintaining gradients
What is electrogenic?
pumping certain ions across a gradient
Active transport may be ____which causes movements of other ions.
electrogenic
Active transport exhibits _____, ___ and ____(like enzymes and facilitated diffusion)
saturation, specificty and inhibition
What is bulk flow?
where molecules move in masses in response to a pressure gradient
What is bulk flow?
where molecules move in masses in response to a pressure gradient
pressure gradient examples?
physical force pushing: BP, gravity
What is filtration?
A special case of bulk flow where molecules are "pushed or pulled" through a membrane in
response to a physical pressure