Oreo Mitosis Student Worksheet Balling.docx
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Name______________________________ #_____ Date________________
Oreo Mitosis Lab
Materials needed for each group of 3 students: 6 Oreo Cookies (per group) 2 Tablespoons assorted color rod-shaped candy sprinkles 6 Toothpicks (2 per group member) Directions: 1) Using your textbook or other classroom resources, find an image of the cell cycle that includes: interphase, mitosis (prophase, metaphase, anaphase and telophase) and cytokinesis. 2) Using the image you found, you will create a model for each stage of the cell cycle listed above. 3) If your group has two members, each member will model three stages. If your group has three members, each member will model two stages of the cell cycle. 4) Carefully remove the top cookie from all six cookies by twisting the top cookie in a circular motion while holding the bottom cookie with your other hand. The bottom cookie with the cream filling attached will be used for your models (Note: You may eat the top cookie, or lay it aside.) 5) Place the cookies on the sheet of construction paper. 6) The cream filling represents the cytoplasm of the cell. You must create the structures inside the cell that play a role in the cell cycle by using candy sprinkles to represent the chromosome pairs and other sprinkles to represent the spindle fibers, centrioles, nuclear membrane, etc...
7) The toothpicks may be used to remove or divide the cytoplasm or to move around the sprinkles. 8) Once you have created a model for each stage of the cell cycle, summarize what is happening in each stage in the table below.
Stage Summary of Important Events
Interphase
Prophase
Metaphase
Anaphase
ballinwithballing.
Telophase
Cytokinesis
9) Label the following on your construction paper: Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis, cleavage furrow. Also include a key for the sprinkles. (for example what color are the spindle fibers, centrioles, etc)
Optional for an extra cookie: Once you have modeled each stage and summarized the key events, take a picture of the cookies and post to Twitter with #ballingbiology and then show it to your teacher on twitter.
10) Once your teacher confirms that your models and summary are accurate, you and your group may consume what remains of your Oreo cookie models.
11) Clean-up: Discard all materials from your lab once your teacher approves of your models and summary. Wipe off all surfaces to remove crumbs.
Of course...you must leave your station cleaner than you started! minus 5 points for a dirty station...no excuses!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
How creative are you? Can you think of a sentence to help you remember the order of events in the cell cycle?
Example: In private, my teacher always cries.
I-__________ P-__________ M-__________ T-__________A-__________C-___________
Analysis Questions: 1. During which phase of mitosis do the sister chromatids split apart and move toward the poles of the cell? _____________
2. During which phase of mitosis does the nuclear membrane reappear around the newly formed sets of chromosomes? _____________
3. When are the chromosomes copied? ____________
4. From what structures do the spindles originate? ____________
ballinwithballing.
5. What is the difference between cytokinesis in plant and animal cells?
____________________________________________________________ ____________________________________________________________ ____________________________________________________________
7. What are the similarities between this activity and actual mitosis?
____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________
8. What are the differences between this activity and actual mitosis?
____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________
9. When does the cytoplasm divide? ____________
10. What are some things you were not able to illustrate very well with your cookie model?
____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________
ballinwithballing.
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