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Concentration
Number of particles
Diffusion ( passive transport)
Movement of particles from higher concentration to low concentration ( achieves equilibrium)
Equilibrium
Equal concentration of particles across a permeable barrier
Dynamic equilibrium
Equal exchange of particles net gain is 0
Osmosis
Diffusion of water
Facilitated diffusion
When particles diffuse across the membrane using channel proteins (polar or ionic)
Simple diffusion
Facilities diffusion across the phospholipid bilayer meaning it’s nonpolar
Active transport
Low to high requires ,a pump,atp, and creates a gradient