1. Which of the following groups was most likely intended to serve as a control for the effect of Protein F on tadpole activity?
2. Suppose Experiment 2 had been continued for another 30 min. How many Group 7 tadpoles would most likely have been observed to be swimming at 180 min?
3. Experiments 1 and 2 differed in which of the following ways?
4. In Experiment 1, after a group was exposed to Protein F for 2 hr, how was the group more likely removed from the water containing Protein F and placed into its new environment—with a fine wire mesh basket or with a watertight plastic cup?
5. The molecules of the substance secreted by the tadpoles are composed of what type of subunit?
6. Consider the statement “When the tadpoles were in the presence of Protein F, the activity of the tadpoles that were more hungry increased faster than did the activity of the tadpoles that were less hungry.” Do the results of Experiment 2 support this statement?
7. Consider the statement “The activity of the tadpoles that had been exposed to 300 pM of Protein F increased faster than did the activity of the tadpoles that had been exposed to 100 pM of Protein F.” Do the results of Experiment 1 support this statement?
8. Based on Student 3’s predictions, when light enters the glass from the vacuum, which of the properties of light listed below increase(s) in value?
9. Based on the information given, when light enters the glass, can light’s frequency change without its energy changing?
10. Which students imply that light’s frequency before entering the glass is different from its frequency after leaving the glass?
11. Which of the students, if any, implies that the collisions between light and atoms of the glass cause no change in light’s energy?
12. Which of the students, if any, implies that the speed of light in the vacuum can have more than one value?
13. Why does Student 2 maintain that if light enters the glass and λ increases, the size of the increase must be limited?
14. If each of Students 1 and 2 were to provide a value for the E of light reentering the vacuum, would Student 1’s value be greater than, less than, or equal to Student 2’s value?