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Passive Transport, Osmosis (No energy needed), Facilitated Diffusion (No…
Passive Transport
Osmosis
No energy needed
Facilitated Diffusion
No energy needed
Differences between the concentration gradient
Moves from HIGH concentration to LOW concentration
Simple Diffusion
3 Types
Hypertonic
Hypotonic
Substances move High Water Concentration to Low Water Concentration
No energy needed
No energy needed
Substances move from low solute concentration to high solute concentration
Tonicity
semipermeable membrane
selectively permeable membrane
lets some substances in; keeps some substances out
What causes movement of molecules in and out of the cell??
High solute to Low solute
High solute to Low solute
Transport proteins facilitate movement in and out of cell
molecules can simply move in and out of the cell anywhere on the membrane
High Solute and Low Water
Low Solute and High Water
a cell in a hypertonic solution will shrink
a cell will blow up huge!!!
Water rushes IN the cell
Water rushes OUT of the cell
