The Cell Cycle and Cancer
I. Purpose
The find difference between cancer and normal cells.
II. Background
The significance of finding the difference in cell's is that cancer cells keep dividing and normal cells stop dividing and die
III. Hypothesis
I belief that if the cells don't stop dividing you get cancer and if they stop dividing and die at a point they are normal
IV. Materials
- Ovary Tissues
- Stomach Tissues
- Microscope
- Cancer cells of ovary Tissues
- Cancer cells of stomach tissues
- Slide
- Cover slip
V. Procedure
- Click the monitor to watch the video about the cell cycle.
- Now click the information button to learn about cancer.
- Click on the microscope to begin learning about the phases of mitosis.
- Click and drag the label to the corresponding cell under the microscope.
- Open the data table and begin to record the number of cells in each phase of mitosis in the tissue sample. You can use the calculator to determine the percentage of cells dividing and the percentage of cells at rest. When you have counted all the cells in a particular sample, click the "Tissue Slide" and select a new sample. You can chose from normal or cancerous tissue.
- Open the journal to answer some questions about cell division and cancer
VI. Data
Data Table
VII. Journal Questions
1.Based on your data and observations, what are some of the differences between normal cells and cancer cells?
ANSWER: The cancer cells were more in dividing than at rest.
2. When studying cell division in tissue samples, scientists often calculate a mitotic index, which is the ratio of dividing cells to the total number of cells in the sample. Which type of tissue would have a higher mitotic index, normal tissue or cancerous tissue? Explain.
ANSWER: Mitotic ratio would be higher in cancer cells cause they are more in division stage
3. Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.
ANSWER: I would expect skin cells to have a higher mitotic rate because they get damaged every day and need to be replaced every day.
ANSWER: The cancer cells were more in dividing than at rest.
2. When studying cell division in tissue samples, scientists often calculate a mitotic index, which is the ratio of dividing cells to the total number of cells in the sample. Which type of tissue would have a higher mitotic index, normal tissue or cancerous tissue? Explain.
ANSWER: Mitotic ratio would be higher in cancer cells cause they are more in division stage
3. Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.
ANSWER: I would expect skin cells to have a higher mitotic rate because they get damaged every day and need to be replaced every day.
VIII. Conclusion
My hypothesis was if the cells don't stop dividing you get cancer and if they stop dividing and die at a point then they are normal and it was correct. I learned that cancer cell's have more percentage of cells dividing than normal and less cells at dividing. my observation was if the cells keep dividing u get can cancer and if they die then they are normal. Commonalities were they both divided and went through stages of cell cycle. I could improve this lab by using different cancer cell from different places and different places. Unavoidable error was that the cancer cell ere going to divide more or cell contact with material. My conclusion is cancer cells divide more and normal cells divide and die