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Cell Transport

Unit 4: Transport

TermDefinition
Diffusion A form of passive transport that moves substances from a high concentration to a low concentration.
Osmosis The movement of water from areas of high concentration to areas of low concentration without the use of energy.
Facilitated Diffusion A form of passive transport that moves substances from a region of high concentration to a region of low concentration using a helper protein.
Passive Transport A form of transport that moves substances from a region of high concentration to a region of low concentration. This form of transport DOES NOT requires energy (ATP).
Active Transport A form of transport that moves substances from a region of low concentration to a region of high concentration. This form of transport requires energy (ATP).
Selective Permeability Only allowing certain things to enter and exit.
Cell Membrane A membrane that surrounds all cells, and it controls what can enter or leave (maintains homeostasis).
Transport Protein A protein used to move large substances across a membrane, or to move substances against their concentration gradient.
ATP The molecule of energy for the cell that is made during the process of cellular respiration.
Concentration Gradient There is more a substance of one side of a membrane than on the other side.
Transport that does not require energy: diffusion, osmosis, facilitated diffusion
Forms of transport that moves substances down the concentration gradient: diffusion, osmosis, facilitated diffusion
Forms of transport that require transport proteins: facilitated diffusion and active transport
Forms of transport that move substances with their concentration gradient: diffusion, osmosis, facilitated diffusion
Form of transport that moves substances against its concentration gradient: active transport
Created by: Biomonsters
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