AGRC1021 Lecture Notes - Lecture 1: Cell Fractionation, Cell Membrane, Electron Microscope
6 Aug 2018
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Document Summary
Even in multicellular organisms, the cell is the basic unit of structure. The cell is the simplest collection of matter that can live. All cells are related by their descent from earlier cells. Concept 6. 1 to study cells, biologists use microscopes and. The discovery and early study of cells progressed with the invention of mi. In a light microscope (lm), visible light passes through the specimen and. The lenses refract light such that the image is magnified into the eye or o. Magnification is the ratio of an object"s image to its real size. Resolving power is a measure of image clarity. It is the minimum distance two points can be separated and still be disting. Resolution is limited by the shortest wavelength of the radiation used for i. The minimum resolution of a light microscope is about 200 nanometers (n. Light microscopes can magnify effectively to about 1,000 times the size o.
