Prokaryotic And Eukaryotic Cells Essay

Cells are the basic functional units of all organisms. Cells are the smallest unit of life and are often called the "building blocks of life". The distinction between prokaryotes and eukaryotes is considered to be the most important variation among groups of organisms. Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. The differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA. In this lab four cells were observed and they were Onion Epidermis Cell stained with Iodine, Elodea Freshwater Plant Cell, Epithelial Cells aka Human Cheek cells stained with Crystal Violet, and Unknown Cell. The difference between animal and plants cells is that animal cells does not have a cell wall or chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed, rectangular shapes. Plant cells contains a large and central vacuoles while animal cells contains small and fewer vacuoles.
In this lab, Plant cells have cell walls for support outside their cell membrane and are usually
Is that not all other plant cells are green. For instance, the petals of a flower can be many colors and they are plant cells. Roots and bark of trees are not green. Cells deep within the structure of plants are not green. And not all onion cells are lacking in green color. The bulb of the onion lacks green, but the stem and leaves of the onion plant are green.The reason the bulb is white, and not green is that it has no chlorophyll. The bulb is under ground and used for storage of nutrients and not used for converting sunlight into food energy. The leaves and stem are green because they do have chlorophyll in order to convert the sunlight into