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7 Cards in this Set
- Front
- Back
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magnification
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the degree to which the size of an object is larger than the object itself. Numerically its the image size divided by the actual size of the object , using the same units
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resolution
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the degree to which it is possible to distinguish between 2 objects very close together. The greater the resolution the greater the image detail you can see
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staining
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refers to any process that helps to reveal or distinguish different features. In light microscopy stains may be colours or fluorescent dyes. In elcetron microscopy the are metals or metal salts
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organelle
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a particular structure of a cell that has a specialised function. Some organelles are membrane bound, others are not. All perform a particular role in the life processes of a cell
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phospholipid bilayer
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the basic structural component of plasma membranes, contains of two layers of phospholipid molecules. Proteins are embedded into this layer
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Fluid mosaic
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refers to the model cell membrane structure. The lipid molecules give fluidity and the proteins give it a mosaic appearance. The molecules can move about
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cell signalling
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cells communicate with one another by signals. Many molecules act as signals, some signal during processes taking place inside of cells, others signal from one cell to others. Cytokines are an example of cell signals
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