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You can see yeast cells, animal cells, and plant cells pretty well with a 400x magnification (assuming 10x eyepiece and 40x objective lens). See the image below illustrating the human cheek cells about 80 µm wide (scale bar is 50 µm).
We will explore the two largest categories of light microscopes: those that collect transmitted light, originating from some kind of light source, to view the sample and those that collect light that is emitted by the sample itself.
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
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.
Mar 7, 2024 · The most common specimens to observe under a light microscope are cheek cells (animal cells) and onion cells (plant cells) A stain is often used to ensure cell structures are clearly visible under the microscope.
Due to the magnification limits of light microscopes, in order to gain a better understanding of cellular structure and function, scientists typically use electron microscopes (see image (b) in the figures below) that use electrons (subatomic particles) to carry images instead of light.
Cell structure - Edexcel Electron microscopes. Light and electron microscopes allow us to see inside cells. Plant, animal and bacterial cells have smaller components each with a specific...
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