1. Consider the 4 foods in order of the percent by mass of proteins, from lowest to highest. From food to food, as the percent by mass of proteins increased, the mass of food remaining at 28 hr:
2. Consider the statement 'The B. germanica ate the food between 0 hr and 4 hr, between 4 hr and 16 hr, between 16 hr and 24 hr, and between 24 hr and 28 hr.' This statement is consistent with the data in Figure 1 for how many of the 4 foods?
3. A student predicted that the B. germanica would eat less cat food than ham by the end of the study. Do the data in Figure 1 support this prediction?
4. Based on Table1, when 200mg of each of the 4foods was placed in the box, water accounted for more than 100 mg of the mass of which food(s)?
5. Based on Student 1’s explanation, the same substance composes both of the samples in which of the following pairs?
6. Based on Student 3’s explanation, the same substance composes both of the samples in which of the following pairs?
7. Suppose that the temperature of Sample A is increased to 250°C at 1 atm of pressure. At 250°C, would Sample A be a solid or a liquid?
8. Consider the claim that 2 samples having the same density will always be composed of the same substance, regardless of the values of the other 4 properties. Which of the students, if any, would be likely to agree with this claim?
9. Consider the volume of gas collected in the trial in Experiment 2 for Ni at 30°C. The same approximate volume of gas was collected in the trial in Experiment 1 for what mass of Ni?
10. How many temperatures were tested in Experiment 1, and how many temperatures were tested in Experiment 2?
11. Which of the following statements describes a difference between Experiments 1 and 2? In Experiment 1:
12. If a temperature of 5°C had been tested in Experiment 2, would the volume of gas collected for Zn more likely have been greater than 107 mL or less than 107 mL?
13. According to Figure 2, the maximum positive value of V was approximately:
14. A period is the time required for a wave to complete one full cycle. Based on Figure 3, the period for V was:
15. Based on the results of the study, which of the suspected mutagens resulted in the greatest number of His+ revertants in a dish?
16. Based on the results of the study, what is the order of the suspected mutagens, from the substance with the least potential to be mutagenic to the substance with the most potential to be mutagenic?
17. In the study, the scientists tested the effect of Substance P at a concentration of 5×10−9g/mL. After the study, the scientists repeated their test of the effect of Substance P, but at 3 other concentrations. What is the relationship, if any, between the concentration of Substance P and its potential to cause mutations?
18. Before bacteria were added to it, the dish that was intended to serve as the control dish in the study lacked which of the substances listed below?
19. Which of the following statements about the numbers of bacteria that regained the ability to synthesize histidine is consistent with the results of the study for Dishes 2 and 3?
20. The particular strain of S. typhimurium chosen for the study lacks normal DNA repair mechanisms. Which of the following statements gives the most likely reason this particular strain was chosen?
21. The researchers conducting the studies chose to use a box made of a type of plastic rather than of wood to ensure that all of the water from the melting ice would flow from the box and into the trough. The researchers most likely made that choice because that type of plastic, unlike wood, is:
22. Suppose Study 2 had been repeated, except in a lab kept at −1°C. The total volume of runoff measured over the 600 min in the repeated study would most likely have been:
23. According to the results of Study 1, for which of the wind speeds did the runoff volume per 20 min decrease to zero from its maximum value before 500 min?
24. Compare the results of the 2 trials in Study 2. In which trial did the volume of runoff per 20 min reach a greater maximum value, and in which trial did the volume of runoff per 20 min decrease to zero from the maximum value in the shorter amount of time?
25. Based on the diagram and the description of Study 1, which of the following expressions would most likely be used to calculate the volume of the sand layer in the plastic box (before chipped ice was placed on top)?
26. Which factor was varied in Study 1 but kept the same in Study 2?
27. According to the results of Study 1, what is the relationship between wind speed and the volume of runoff?