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HBio Transport Set#1

Cell Transport: Diffusion & Osmosis 2016-2017

TermDefinition
homeostasis constant internal enviroment
fluid mosaic model cell membrane molecules can move around
phospholipid bilayer cell membrane is made of 2 layers of lipid molecules
concentration gradient exists when particles are in higher concentration in one area and lower concentration in another area
permeable ability of a substance to pass through a membrane
semi-permeable ability of only SOME substances to pass through a membrane
selectively permeable cell membrane chooses what will pass through
equilibrium when the rate of particles spreading is even throughout a given area
Why is the cell membrane selectively permeable? to maintain homeostasis
2 functions of a cell membrane maintain homeostasis & support/protection
phospholipids main component of cell membranes
hydrophillic water loving
hydrophobic water hating
channel proteins proteins that make a channel that allow certain molecules to cross a membrane
Created by: tferris5
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