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Membrane Transport
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Diffusion With concentration gradient Movement of particles
Unequal amounts of particles Movement of particles From high To Low
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Dynamic Equilibrium Equal concentrations are reached
Not the same volumes Continued movement across the membrane Not gain or loss
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Osmosis Movement of water From high to low Across a selectively
permeable membrane
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Isotonic Solutions Iso- equal No change in concentrations
Water still moves Same amount moves in as moves out Both sides of membrane are the same
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Hypotonic Solution Hypo- under Out side of cell Water moves into cell
Less dissolved substance More water Water moves into cell
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Hypertonic Solution Hyper- Over Out side of cell
More dissolved substance Less water Water moves out of cell
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Passive Transport Cell uses no energy From high to low Plasma membrane
Concentration gradient
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Facilitated Diffusion
Type of passive transport Use transport proteins Channel proteins Carrier proteins Changes shape From high to low
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Active Transport Cell uses energy Against concentration gradient
From low to high Carrier Proteins Molecule binds with carrier protein Energy then used to change shape Molecule released on other side Carrier protein returns to original shape
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Large Particle Transport
Not through membrane Requires energy Exocytosis- out
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Large Particle Transport
Endocytosis- in
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Types of Endocytosis Pinocytosis: liquid Phagocytosis: Solid
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What about freshwater/saltwater cells?
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Membrane Transport Bioflix
At my website you can find this and the link below has a bunch of tutorials, videos, etc. Transport in action
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