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Transport and membra

Diffusion osmosis

TermDefinition
diffusion Spreading out of particles due to random collision.
osmosis Diffusion of water through a selectively permeable membrane.
facilitated diffusion A type of diffusion involving ions and large polar solutes like glucose.
tonicity Relative solute concentrations of two solutions.
isotonic Two solutes with the same solute concentration.
hypotonic More water than solutes.
hypertonic More solute less water.
crenate Collapsing of the cell membrane due to loss of water.
lysis Cell swelling and exploding. The fate of an animal cell in hypotonic solution.
active transport Movement of molecules from low concentration to high concentration. Requires energy
hydrophilic water loving or attracted to water; phospholipid heads
hydrophobic Water hating; phospholipid tails
intracellular fluid Fluid INSIDE the cell (cytoplasm/cytosol)
extracellular fluid Fluid OUTSIDE the cell including in the blood vessels and outside of the vessels in between tissues.
interstitial fluid a type of extracellular material; fluid found outside of the blood vessels in between the tissues.
Endocytosis bringing material into a cell. Cell membrane engulfs the material forming a vesicle inside the cell.
Exocytosis taking material out of the cell; a vesicle will merge with the cell membrane, dumping it's material into the extracellular fluid.
pinocytosis Type of endocytosis; bringing fluid in.
phagocytosis Type of endocytosis; bringing solids in.
Created by: ServAP
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