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Cells that have been fixed and stained can be studied in a conventional light microscope, while antibodies coupled to fluorescent dyes can be used to locate specific molecules in cells in a fluorescence microscope.
- Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, Peter Walter
- 2002
- 2002
Not only does it allow us to view live samples, as other forms of light microscopy do, but it also allows us to label (or tag) specific macromolecules / cell structure so that we can track them within the cell (Figure 01-04B).
Cell structure - Edexcel Light microscopes. Light and electron microscopes allow us to see inside cells. Plant, animal and bacterial cells have smaller components each with a specific function.
- Microscope Parts. The compound microscope is a precision instrument. Treat it with respect. When carrying it, always use two hands, one on the base and one on the neck.
- Magnification. The compound microscope has two sets of lenses; the ocular lens (or eye piece) which magnifies an object 10 times its normal size, and the objective lenses located on a revolving nosepiece.
- Using the Compound Light Microscope. After the instructor explains the proper carrying procedures, each student should get out a compound microscope and place it before them on the bench.
- The Letter e. Materials. Light microscope. Letter “e” slides. Procedure. Note the position of the letter “e” on the slide (using your eyes only). Now center the slide of the letter “e” on the stage with the “e” in its normal upright position.
Jul 11, 2023 · Cell biology is an extremely active area of study and helps us answer such fundamental questions as to how organisms function. Through an understanding of how cells function, we can discover how human ailments, such as cancer and AIDS, can be possibly treated.
Revise the structures of cells and the difference between diffusion, osmosis and active transport. Study the factors that affect enzyme action.
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Review your understanding of cell parts and functions in this free article aligned to NGSS standards.
