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cainivinchap5maslako

chapter 5

QuestionAnswer
diffusion the natural movement of molecules from one area of greater concentration to an area of less concentration
carrier protein a protein that transports substances across a cell membrane
facilitated diffusion the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins
concentration gradient a difference in the concentration of a substance across a distance
Ion Channels proteins in membranes that let charged practicals come to the membrane. they can be gated or not gated
osmosis occurs when solvents, usually water, move across a membrane. Since water is very small it occur naturally
hypertonic higher water/solute concentration compared to the outside of the cell
hypotonic lower water/solute concentration compared to the outside of the cell
Isotonic describes a solution whose solute concentration is equal to the solute concentration inside the cell
contractual vacuole vacuoles that fill up with water and forcibly expels it when its in a hypotonic environment
Turgor pressure the pressure that is exerted on the inside of the cell walls and that is cause by the movement of water into the cell
cytolysis bursting of a cell from too much water entering it plants have a cell call that prevents them from bursting
plasmolysis in a plant cell if there is to much water it will pull away from the cell walls
active transport forcibly with the help of ATP going to a low concentration to a high concentration
passive transport going from a high concentration to a low naturally
sodium potassium pump the inside of the cell should be richer with more potassium and the outside should have more sodium or 3 sodium should be move out side of the cell for every 2 potassium moveing inside
phagocytosis the ingestion of bacteria or other materials
pinocytosis a method of active transport across the cell membrane in which the cell takes in extracellular fluids
Grade 18/18 I altered active transport and sodium-potassium pump
Created by: Maslakowskis
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