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SLS Cell Transport

SLS Bio12 Cell Transport HH

active transport movement of molecules from low to high concentrations requiring ATP
carrier protein move molecules such as ions and other proteins across a biological membrane; can bond and drag through the membrane and release on the other side
cell membrane surrounds the cytoplasm of the cell; regulates the transport of molecules in and out the cell; very flexible
channel protein embedded in the cell membrane and a have a pore for materials to cross
concentration gradient molecules moving from a high concentration area to a low concentration area
diffusion the intermingling of a substance by the natural movement of their particles
endocytosis moving materials into the cell through pinocytosis, receptor-mediated endocytosis and phagocytosis creating a vacuole
exocytosis moving materials out of the cell by fusing the vesicles to the plasma memebrane
facilitated transport using transport proteins to move high to low concentration
fluid mosaic membrane model model that represents the cell; fluid is the phospholipid bilayer and the mosaic is the proteins
glycolipid lipid with a carbohydrate attached; communicative role, often acting as markers for cellular recognition
glycoprotein protein with a carbohydrate attached; crucial part in cell-cell recognition, and have important roles in protection and the immune response, reproduction, structural integrity and cell adhesion
hydrophilic water loving
hydrophobic water fearing
hypertonic water moves out of the cell; crenation
hypotonic water moves into the cell; lysis
isotonic no net movement; dynamic equilibrium
osmosis diffusion of water
passive transport processes no energy is required to make the molecule move
phagocytosis engulfs large particles such as food, bacteria into vesicles; "cell eating"
phospholipid make up the cell membrane; two fatty acids that are non polar and the head is polar containing a phosphate group and glycerol
phospholipid bilayer the composition of the cell membrane; semipermeable membrane
pinocytosis takes in dissolved molecules as a vesicle; "cell drinking"
pressure gradient moving from higher pressure to lower pressure
selectively permeable chooses what can move through and what can't
tonicity tonicity is the relative concentration of solutions that determine the direction and extent of diffusion
Created by: hhenderson