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Botany - The Microscope and Plant Cells - viewed Volvox and...

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Blane Smith Biology 104 October 10, 2007 The Microscope and Plant Cells P During our last lab session, we were taught how to use a compound light microscope. We had to make sure that we handled the microscopes properly to avoid breaking them . We also had to make sure the area where we used the microscope was free of clutter and watch out for the power cord to avoid further accidents. We first tested our microscopes using a slide with the letter “e” on them. To the naked eye, the “e” looked normal. However, under a microscope the “e” was upside down and backwards. After we completed the test with the letter “e” slide, we began to look at plant cells and organelles. The first cells that we looked at were onion cells at 10x. I could easily identify the nucleus, cell wall, and the cytoplasm. The next slide that we viewed contained red pepper cells. Under the 40x, it was very easy to see the cell walls, cytoplasm, and the chromoplasts. The chromoplasts showed up as large red dots inside of each cell. We also
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Unformatted text preview: viewed Volvox and Diatoms under the 40x. The Volvox slide looked like an entire community and was very colorful. Euglena at 40x looked like small grains of rice. The nucleus could easily be identified. Last we looked Spyrogyra, which were very interesting. They contain a long cylindrical vacuole and the chloroplasts could easily be seen. The chloroplasts look like a spiral staircase going up the entire cell. U The procedures in this lab were not very hard but it was somewhat difficult to identify the nucleus in the red pepper cells and in the Spyrogyra. The only other difficulty that I had was adjusting the focus on the microscope. I had a problem with the viewing area and I was not able to see the slide through both ocular lenses. N From this lab, I have learned what many different types of cells and organelles look like on the microscopic level. I have also learned how to identify several types of cells and organelles and from drawings that we had to do....
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