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15 Cards in this Set

  • Front
  • Back
Basic unit of structure for all living things
the movement of molecules or particles from an area of greater concentratrion to an area of lower concentration.
cells containing membrane bound nuclei
A group of tissues that work together to perform a certain function
The specialized structures in the cytoplasm of a cell that carry out special functions.
the diffusion of water across a semi-permiable membrane from a region of high concentration to a region of low concentration.
Cells lacking distinct membrane bound structures; bacteria
Organ System
A group of organs that work together to perform a specific function.
In multicellular organisms, a group of cells that are organized into functional unit; usually intergrated with other tissues to form an organ.
Golgi Bodies
Stacks of flattened membrane sacs that serve as a packaging prosessing center for products released from the cell.
Concentration Gradient
The difference in concentration between a region of high concentration to a region of low concentration.
Facilitated Diffusion
A process by which certain molecules diffuse quikly across the membrane.
Osmotic Pressure
The increase in pressure resulting from the flow of water in osmosis
Isotonic Solution
A solution that contains the same concentration of dissolved substances as does a living cell placed in it.
Hypotonic Solution
Hypertonic Solution
A solution that contains a lower concentration of dissolved substances than that of a cell placed in it. A solution containing a higher concentration...above.