Notes Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification.
Carter experimented with plant cells and animal cells. For plant cells, we used onion cells and human cheek cells for animal cells. The microscopes in the science lab have the magnification power of x10 for the eye piece and between x4, x10 and x40 for the objective lens.
The total magnification can be low power x40medium power xor high power x We photographed the cells using our mobile phones. We first experimented with onion cells top image. We took a very thin layer of the inner surface of an onion, then we put it on a slide, added a drop of water, and lowered down the cover slip.
We looked at the cells under low power and medium power. With the cheek cells bottom imagewe made use of methylene blue stain instead of water because cheek cells are transparent, so we used methylene blue to make it more obvious. First, we put a drop of methylene blue on the center of the slide.
Then we wiped the lining of our cheek with a plastic coffee stirrer and then smeared it on the drop of methylene blue. We looked at the cells with medium and high power, because the cells are much smaller compared to the onion cells.
In order to measure the cell length, we have to know the diameter of field of view of the microscope. So, we measured a ruler under a microscope. The diameter of field of view in: In the onion cells picture, the magnification is medium, and there are 9 cells in the diameter of the field of view.
Therefore the actual size of an onion cell is 0. So, we printed the photo and measured the length of a cell in the photo. The diameter of the field of view in the photo is Hence, the actual size of a cheek cell is 0.Onion cells (Allium cepa) is plant cell and Cheek cells (Homo sapiens) is an animal cell.
Hypothesis: The size of an animal cell (Homo sapiens) should be smaller than a plant cell (Allium cepa). Because a plant cell has cell wall which is to maintain the size of it while animal cell doesn’t.
Compare the Size of Cheek Cell and Onion Cell Essay Compare the size of cheek cell and onion cell DCP: Introduction: In this experiment, Onion cells (Allium cepa) Cheek cells (Homo sapiens) were measured and compared - Compare the Size of Cheek Cell and Onion Cell Essay introduction.
magiscopes with 10x eyepiece or microscopes(1 for each pair of students), preprepared onion skin slides, preprepared cheek cell slides(one of each for each pair of students), crystal violet to prepare cheek cells, paper and pencil for each child to sketch cells, CHARACTERISTICS OF .
The average length of an onion cell ranges from mm or microns to mm or microns. No one has actually measured the width of an onion cell but from the diameter of the field of view in a microscope and comparing the length to the width, I would say that the width is .
Observing Cork Cells and Onion Cells Background Over years ago, Robert Hooke. an English scientist. described The best place to look is along the thinnest edge of the slice. a. Make a drawing of what you see under low power. 4. Examine the cork under high power.
b. Describe the general shape of cork cells. Sep 16, · The normal range for an animal cell varies from 10 to 30 micrometers while that for a plant cell stretches from 10 to micrometers. Beyond size, the main structural differences between plant and animal cells lie in a few additional structures found in animal regardbouddhiste.com: Resolved.