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Name:_____________________ Block: _____________________ Cell Structure Lab Answer Sheet Important Directions for Drawings: 1. Make all drawings in the highest magnification possible. 2. For each specimen, you do not need to fill the circle (field of view) with cells. Just draw several cells for each. 3. These several cells must be clear drawings. Take your time and draw what you see. Simple outlines with no detail will not be given full credit. 4. All drawings must be the size that you see them in the field of view. Do not draw them larger or smaller than they appear in the microscope. 5. Drawings should include the following information: a. The magnification used while drawing the cell b. Appropriately labeled cell structures from the following list: Cell membrane Cell Wall Chloroplast Cytoplasm Vacuole Amyloplast Nucleus Chromoplast A. Cork Cells 1. What cell structures are apparent when looking at cork cells? 2. Why do cork cells appear to be empty? Cork Cell Drawing Information: Magnification = ________ Labeled Structures: B. Onion Cells 3. What did you see through the microscope that appears as a thick line surrounding the cells? (This also identifies it as a plant and not an animal cell.) 4. What structures can be seen in an unstained onion cell? 5. What differences do you see between the stained and unstained onion cells? Unstained Onion Drawing Info: Magnification = ________ Labeled Structures: Stained Onion Drawing Info: Magnification = ________ Labeled Structures : 6. Do the onion cells that you examined in this lab have chloroplasts? If chloroplasts are used to capture energy from the sun, explain why your answer makes sense. 7. Where would you find onion plant cells that have chloroplasts? Explain. C. Elodea Cells 8. What structures did you see in both Elodea cells and onion cells? 9. What are the differences between Elodea and onion cells? 10. What is the function of a cell wall? 11. How many chloroplasts are in an average Elodea cell? (Count the number in 3 cells and calculate the average.) 12. How many cell layers were in the Elodea leaf? Elodea Cell Drawing Information: Magnification = ________ Labeled Structures: D. Potato Cell 13. What happened when you put the yellow-colored iodine stain onto the potato? 14. What is the name of the cell organelle that changed color with the iodine? (Hint: starch changes color when it hits iodine) Potato Cell Drawing Information: Magnification = ________ Labeled Structures: E. Red Pepper Cells 15. How are the red pepper cells different from the Elodea cells? 16. How are the red pepper cells similar to the potato cells? 17. What structure visible in the red pepper cell has not been seen in any other cells during this lab? Red Pepper Cell Drawing Information: Magnification = ________ Labeled Structures: F. Human Cheek Cell 18. What differences do you see between the human cells and the plant cells you have observed? 19. What are the similarities between the human cells and plant cells? Human Cheek Cell Cell Drawing Information: Magnification = ________ Labeled Structures: