Membrane Transport
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| passive transport | when substances cross the membrane without the use of energy
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| diffusion | movement of molecules from an area of higher concentration to an area of lower concentration
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| concentration gradient | the difference in amounts of substances on either side of a membrane-usually one side has more than the other
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| equilibrium | When the concentration of substances are equal on both sides of a membrane
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| plasmolysis | lack of water in a plant. It wilts
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| cytolysis | the bursting of red blood cells when placed in a hyotonic solution
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| facilitated diffusion | aided by special proteins imbedded in the membrane molecules cross without energy
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| carrier protein | in the membrane, this helps molecules travel across the membrane without using energy
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| ion channel | small passageways in the membrane that allow Na+ or Cl- to pass through
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| osmosis | when water moves from one side of a membrane to another-moving from higher to lower concentration
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| hypotonic | when the solution outside a cell is less concentrated than inside the cell
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| hypertonic | when the solution outside a cell is more concentrated than inside the cell
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| isotonic | when a solution outside a cell is the same concentration as inside the cell
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| contractile vacuole | organelle that removes water for some organisms like paramecium
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| turgor pressure | the pressure that water exerts on the cell walls and central vacuoles of plants.
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Created by:
jensenc
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