Mitosis in Animal Cells
Objective: Students will identify the stages of mitosis in an animal cell.
Engagement: Display the image below of a white fish cell and engage students in the following discussion.
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Earlier this year we examined plant, animal and dead cells. What type of cell would you consider this to be and why? (Students should identify the cell as a living animal cell because of the rounded shape and the visible nucleus) Is this animal composed of one cell or many? (Many) How do you think these cells are reproduced? (Accept possible answers) |
Exploration: (Approximately 20 minutes) Have students work in pairs if possible to complete the following lab activity:
Question: What changes can be observed during cell division in white fish cells (animal cells)?
Materials:
- microscope
- prepared whitefish cell's slides
Procedure:
1. Observe and draw at least four cells with structures unlike those you have seen before.
2. Select one cell to be displayed on the flex cam to share with your classmates.
Record images taken by students to share with the class. Have students return to their seats for discussion.
Explanation: Display the images taken by your students. Ask students in which structure of the cell do these changes occur. Tell students that the process that they have observed is called mitosis. Explain that these steps occur in sequential order and ask students to order them. At this point display the images below:
Prophase
Metaphase
Anaphase
Telophase and Cytokinesis
Explain that these pictures were taken from a microscope with a much greater magnification capability than ours.
Now let's compare the images of the cells you observerd with the images we have just viewed. (If you attach your flex cam to your television you can display student 's cells and cells above simultaneously.)
Elaboration: Have students independently label their drawings and conclude their labs.
Evaluation: Evaluate throughout entire activity.
Homework:: Have students define mitosis in their own words.
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