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Do all cells look alike? Give some examples of how they are different.

Journal Question 13 Nov 2012. Do all cells look alike? Give some examples of how they are different. Why might some cells be different from others?. Mystery Cells. Day 1. The situation.

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Do all cells look alike? Give some examples of how they are different.

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  1. Journal Question 13 Nov 2012 • Do all cells look alike? • Give some examples of how they are different. • Why might some cells be different from others?

  2. Mystery Cells

  3. Day 1

  4. The situation • Police contacted the administration of Westwood Middle School early this morning. A dead body was found in the field behind our school. Investigators are asking for our cooperation to help solve the crime.

  5. The situation Interview with the medical examiner • “ We found no external marks on the body, suggesting no physical trauma. We did, however, recover some unique cells from inside the body that have been saved for analysis. Before we can determine what exactly they are, we need to decide whether or not they belong to a plant or animal species.”

  6. The situation Research • In order for you to be of assistance to the police department, you need to learn more about cells, and the differences between them.

  7. Use the classroom microscopes to view slides of different cells. You will look at ALL of the slides, BUT… you only have to draw 6.

  8. Microscopes • Write down the number of the slide/microscope you are looking at. • Using the circles on your worksheet, draw a picture of what you see. • Make a prediction - Is it a plant OR animal cell? Circle one!

  9. Day 2

  10. You are an animal. • An onion is a plant.

  11. Animal Cell (Human Cheek)

  12. Plant Cell (Onion)

  13. When you are finished with your drawings, you should: Look on page 68-69 of your textbook and writing down 5 observations EACH about plant and animal cells.

  14. Reflection Left-hand page Now that you know a little more about the differences between plant and animal cells, look back at your worksheet from day 1. • In your science notebook, write down each number that you looked at. • Using what you’ve learned, write whether it is a plant or animal cell AND why.

  15. JOURNAL QUESTION • 14 Nov 2012 • What were several differences you observed between plant and animal cells?

  16. Reflection Left-hand page Now that you know a little more about the differences between plant and animal cells, look back at your worksheet from day 1. • In your science notebook, write down each number that you looked at. • Using what you’ve learned, write whether it is a plant or animal cell AND why. Example: #34 = Plant because it has a large central vacuole.

  17. The situation Review-Organization What have you learned/noticed about the organization of plant and animal cells? Animal: • Often irregular or clumped Plant: • Very organized or ordered, stacked on top of one another, rows

  18. The situation Cheek Cells Elodea

  19. The situation Cheek Cells Onion

  20. The situation Review- Structures What structures do plant cells have that animal cells do not? (HINT: Look at the diagrams on pgs. 68-69) Plant: Copy this table into your science notebook

  21. The situation Your task • The medical examiner has attached a copy of the microscopic views of the cells found within the dead body. Please draw them in your science notebook and write 5 observations (BE SPECIFIC!)

  22. Invading cells Human body cells

  23. The situation Your task • Next, submit your findings in a letter to the police department for formal review. *Remember, this is a professional document!* Make your claim AND support it with evidence!!! *Use page #44 In your ISN (Left)*

  24. ATTN: SLP Police Department I have some information to add to your case regarding the recent discovery of a dead body behind Westwood Middle School. It is my belief that . . .

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