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Cell membrane transp

Unit 1&2 VCE Biology

TermDefinition
endocytosis movement of large substances INTO a cell
hypotonic solution with a lower concentration of solute than the solution to which it is compared
semipermeable only some substances can cross the plasma membrane, based on their size/charge
active transport movement of substances against the concentration gradient, energy required
pinocytosis endocytosis of liquids
hydrophobic not water soluble - water fearing/non-polar
isotonic solution with an equal concentration of dissolved substances than the solution to which it is compared
channel protein allows small hydrophilic substances to move across the PM, along the concentration gradient
solubility how well a solute dissolves in a solvent
hydrophilic water soluble - water loving/polar
phagocytosis endocytosis of solids
hypertonic solution with a higher concentration of solute than the solution to which it is compared
osmosis movement of water along the concentration gradient, no energy required
bulk transport movement of large molecules across the plasma membrane, involves both exocytosis and endocytosis
plasma membrane phospholipid bilayer, controls what enters and exits the cell
facilitated diffusion requires carrier/channel proteins to let substances in/out of cell, along concentration gradient, no energy required
exocytosis movement of large substances OUT of a cell
phospholipid has a hydrophillic head and a hydrophobic tail, a bilayer of these make up the plasma membrane
(simple) diffusion movement of substances along the concentration gradient, no energy required
carrier protein allows larger hydrophillic substances to move across the PM, involves a change in shape
Created by: BiologyBright
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