Bio Lab Paper

Topics: Eukaryote, Cell, Chromosome Pages: 2 (560 words) Published: November 7, 2011
Microscopy, Mitosis, and Motility Lab Discussion Questions
In the Microscopy, Mitosis, and Motility lab, the class used the Compound Microscope. The Compound Microscope helped examine the prokaryotic and eukaryotic cells, observe the different stages of mitosis, and compare modes of motility used by protists. The light compound microscope works with the aid of lenses such as the eyepiece. These lenses help keep the focus of the light on the eye. The fine and course adjustments also assist with the focus of the object one is viewing while moving the stage up and down. The mechanical stage control helps move the slide horizontally and vertically. The main difference between the Eukaryotes and Prokaryote cells is the diverse organelles each cell has. For example, Eukaryote cells usually have a nucleus, but the prokaryote cells do not. There is also a difference in the location that each cell is found. For instance, Prokaryote cells are not found in humans, whereas Eukaryotes are. Under the microscope, the differences that were observed are the lacking of nucleus in the coleus leaf, the lack of chloroplast in the human cheek cell, and the lack of vacuoles in the human cheek cells. Putting aside differences, the onion and cheek cells had a few organelles in common. Both cells contained a nucleus, cytoplasm, and cell membrane. These organelles were observed with the assistance of blue and red dyes. The red dye was used for the onion cell and the blue dye was used for the human cheek cell. Dyes help give one a more vivid view of the actual cell. It would be difficult to see phenomenal cells using just regular light.

In this lab, the different of stages of mitosis was also viewed using onion root tips. Onion root tips were used because plant roots are constantly growing and provide a well-situated source of actively dividing cells. Furthermore, the splitting of the chromosomes of the cell is actually called Mitosis. While the cells split, they create...
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