Key words and definitions 0.0 / 5 ? BiologyCells, exchange and transportASOCR Created by: DanielaCreated on: 28-03-14 09:45 Magnification The degree to which the size of an image is larger than the object itself 1 of 12 Resolution Degree to which it is possible to distinguish between two objects very close togther. 2 of 12 Staining Any process that helps to reveal or distinguish different features. 3 of 12 Cytoskeleton Network of protein fibres found within cells that gives structure and shape to cell and moves organelles around inside cells. 4 of 12 Phospholipid bilayer Basic structural component of plasma membranes. Proteins are embedded in this layer. 5 of 12 Fluid Mosaic Model of cell membrane structure. Lipid molecules gives it fluidity and proteins give it a mosaic apperance. 6 of 12 Cell signalling Communication between cellsby signals. E.g. cytokines 7 of 12 Diffusion The movement of molecules from an area of high concentration to an area of low concentration down a concentration gradient. 8 of 12 Active transport Movement of molecules or ions across membranes, which uses ATP to drive protein pumps. 9 of 12 Mitosis Process of nuclear division where two genitically idnetical nuclei are formed from one parent cell nucleus. 10 of 12 Clones Genetically identical cells or organisms derived from one parent. 11 of 12 Differentiation Changes occuring in cells of a multicellular organism so thata each different type becomes specailised to perform a specific function. 12 of 12
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