The Human Cheek Cell KEY

1. List the 3 parts of the Cell Theory

______all living things are made of cells_________

______cells can only come from other cells______

______cells are the basic unit of structure and function____

2. Describe or define each of the following

--cell membrane ______outer boundary of the cell_______

--cytoplasm ___fluid within the cell__________

--nucleus _____control center of the cell_________________

--organelle ____cell structure that has a specific function________

3. Sketch the cell at low and high power. Label the nucleus, cytoplasm, and cell membrane of a single cell. Draw your cells to scale. Low power should have cells that are fairly small within the viewing field, at high power a cheek cell will take up about half of the viewing field.

5. Why is methylene blue necessary? cells are transparent
6. The light microscope used in the lab is not powerful enough to view other organelles in the cheek cell. What parts of the cell were visible. nucleus, cell membrane
6. List 2 organelles that were NOT visible but should have been in the cheek cell. mitochondria, lysosome, endoplasmic reticulum
7. Is the cheek cell a eukaryote or prokaryote? How do you know? eukaryote, has a nucleus
8. Keeping in mind that the mouth is the first site of chemical digestion in a human. Your saliva starts the process of breaking down the food you eat. Keeping this in mind, what organelle do you think would be numerous inside the cells of your mouth? lysosomes