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Test 1 - Scientific Method and Experiments / Characterisitics of Life

1. What are the characteristics of life? _ 2. What is a control group? _ 3. What is the difference between growth and development? _ 4.Why are controlled variables important in an experiment? _ 5. Contrast how unicellular and multicellular organisms grow. _ 6.What are controlled variables in an experiment? _ 7. What is an experimental group? _ 8.What is a control in an experiment? _ 9. What is a “blind” experiment? _ 10. How is a dependent variable related to the independent variable in an experiment? _ 11. What is metabolism? _ 12. What is a dependent variable? _ 13. What is homeostasis? _ 14. What does the experimenter manipulate in an experiment? _ 15. Why are “blind” conditions done in an experiment? _ 16.What is an independent variable? _ 17. Contrast asexual and sexual reproduction. _ 18. Why is it important to allow only one variable to change at a time during an experiment? _ Test 1 (Page 2)

19. What is a cell? _ 20. What is an experimental variable? _ 21. Give an example of a plant responding to a stimuli. _ 22. Contrast a theory with a hypothesis. _ 23. What is cell division? _ 24. What is a theory? _ 25. What are the characteristics of life? _ 26.What is a hypothesis? _ 27. Summarizing the organization found in complex multicellular organisms. **28 - Patty Power** Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems. A. Which people are in the control group? B. What is the independent variable? C. What is the dependent variable? D. What should Mr. Krabs’ conclusion be? _ E. Why do you think 8 people in group B reported feeling better? _

**29 – Slimotosis** Sponge Bob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. Sponge Bob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better. A. What was the initial observation? _ B. What is the independent variable? _ C. What is the dependent variable? _ D. What should Sponge Bob’s conclusion be?

Mr. Krabs created a secret ingredient for a breath mint that he thinks will “cure” the bad breath people get from eating crabby patties at the Krusty Krab. He asked 100 customers with a history of bad breath to try his new breath mint. He had fifty customers (Group A) eat a breath mint after they finished eating a crabby patty. The other fifty (Group B) also received a breath mint after they finished the sandwich, however, it was just a regular breath mint and did not have the secret ingredient. Both groups were told that they were getting the breath mint that would cure their bad breath. Two hours after eating the crabby patties, thirty customers in Group A and ten customers in Group B reported having better breath than they normally had after eating crabby patties. A. Which people are in the control group? _ B. What is the independent variable? _ C. What is the dependent variable? _ D. What should Mr. Krabs’ conclusion be? E. Why do you think 10 people in group B reported fresher breath?
 * 30 – Krusty Krabs Breath Mints**