Diffusion, The process in which particles net displacement from an area of higher concentration to an area of lower concentration. Example: In a building with two floors, if the first one is full, people will go to the second one, Osmosis, The diffusion of water molecules from a place with a higher concentration of them to a place with a lower concentration of them through a semipermeable membrane. Example: A room with people divided by one door where if there's a big amount of people on one side, they will go where there's less, the other side, Active transport , The movement of particles through a cell membrane from a place of lower concentration of them to a place of higher using energy from respiration. Example: A person alone in a room using energy from respiration to enter desks into a room full of people, Concentration gradient , The difference between the number of particles to of two areas, one with higher concentration and other with lower concentration. Example: A team with ten players compared to one of only four, Partially permeable membrane , The condition of a membrane (leaky one) that lets tiny particles pass but not larger particles. Example: A hole where a mouse can pass through but an elephant can't , Solvent, A liquid that can dissolve many substances which are solutes. Example: Water is the solvent and sugar the solute, Solute, Substances that can be dissolve by a liquid called solvent. Example: Hot water is the solvent and coffee granules the solute, Hypertonic, A solution of lower water potential with a lot of solute and a bit of solvent. Example: A raisin in a glass of pure water. , Protein Carrier, A protein that functions during active transport, moving molecules or ions through the membrane. Example: A taxi that only picks up one type of passenger, Isotonic, A solution where his concentrations have the same amount of solutes. Example: Mild brines for preserving fish, Hypotonic, A solution of higher water potential with a lot of solvent and a bit of solution. Example: Add a lot of salt to a piece of cucumber.

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