The Homeostasis Challenge
This simple assessment can be used in a variety of ways for a life science or biology classroom. I personally have used it as an assessment, a pre-test, and/or as a group teaching activity. It's a great way to help students comprehend both the diversity and similarities of cell types, while practicing organism/cell identification based on key structures. To use, copy and paste the questions into a document or activity of your choice and add images as needed.
Part 1: Identify the following cells as prokaryote or eukaryote
1. (insert cell picture)
2. (insert cell picture)
3. (insert cell picture)
4. This single-celled organism has a flagella, but no nucleus
5. This bacteria causes strep throat
6. A cheek cell from inside your mouth
7. A multi-cellular organism
8. A cell with only a membrane, cytoplasm, ribosomes, and a nucleus.
Part 2: Identify the following cells as plant, animal, or bacteria
9. (insert cell picture)
10. (insert cell picture)
11. (insert cell picture)
12. This cell has a cell wall, but no nucleus
13. This cell has both a cell wall and a nucleus
14. This cell contains centrioles
15. This cell contains chloroplasts
16. This cell contains ribosomes, but no membrane-bound organelles
Part 3: For the following, identify which organelle(s) would be most numerous to complete the specified job.
17. A digestive cell that needs to make a lot of enzymes
18. A cell that must release many chemicals in order to communicate
19. A cell that requires a lot of energy
20. A green cell inside a plant leaf
21. A white-blood cell that protects the body by devouring and digesting bacteria
Part 4: For the following, what do you think would be the biggest challenge to maintaining homeostasis (staying alive)?
22. A warm-blooded animal that lives in the arctic
23. A plant that lives in the desert
24. A fish that lives in salt water
25. A plant that lives on the floor of the rainforest
Part 5: Predict what would happen to the following cells.
26. A cell in freshwater
27. A cell in saltwater
Part 1: Identify the following cells as prokaryote or eukaryote
1. varies depending on chosen picture
2. varies depending on chosen picture
3. varies depending on chosen picture
4. prokaryote
5. prokaryote
6. eukaryote
7. eukaryote
8. eukaryote
Part 2:
9. varies depending on chosen picture
10. varies depending on chosen picture
11.
varies depending on chosen picture12. bacteria
13. plant
14. animal
15. plant
16. bacteria
Part 3:
17. ribosomes (and/or rough endoplasmic reticulum)
18. golgi apparatus
19. mitochondria
20. chloroplast
21. lysosomes
Part 4:
22. staying warm
23. finding water
24. avoiding dehydration/hypertonic conditions
25. obtaining sunlight
Part 5:
26. gain water/swell
27. lose water/shrink