(01.08 HC)During an experiment, the time of an object was measured every 20 meters. Each researcher measured the object’s motion on different surfaces, noted as A, B, C, and D. Their average data of the trials are shown below. Distance (cm) 0 20 40 60 80 100 Time A (s) 0 5.23 10.11 14.68 18.54 22.36 Time B (s) 0 4.66 9.33 13.97 18.63 23.31 Time C (s) 0 3.57 7.44 11.32 16.98 23.28 Time D (s) 0 5.00 15.00 40.00 60.00 85.00 Which of the surfaces allowed the object to increase its speed the entire distance of travel?

(01.05 LC)A graph from an experiment is given below.Which of the following is the independent variable?

(01.09 LC)A graph is presented below, representing an object’s motion.Which of the following times is the object at rest?

(01.08 HC)During an experiment, the time of an object was measured every 20 meters. Each researcher measured the object’s motion on different surfaces, noted as A, B, C, and D. Their average data of the trials are shown below. Distance (cm) 0 20 40 60 80 100 Time A (s) 0 5.23 10.11 14.68 18.54 23.36 Time B (s) 0 4.66 9.33 13.97 18.63 23.31 Time C (s) 0 3.57 7.44 11.32 16.98 23.28 Time D (s) 0 5.00 15.00 40.00 60.00 85.00 Which of the surfaces caused the fastest object to slow down the most?

(01.10 LC)Which of the following shows a change of velocity?

(01.07 MC)The position of a driver each hour is shown on the graph below.What is the car’s average speed from the beginning of the trip until time t = 4.5 hour?

2.         Describe 2 factors that affect the rate of a chemical reaction.  (4 Points)

8.         Define secondary protein structure.  (5 Points)

1.         (12 Points)             List and describe the 3 parts of a feedback system.              What is the difference between a positive and a negative feedback mechanism?             Provide a specific example of a negative feedback mechanism.             Provide a specific example of a positive feedback mechanism.

14.       What happens to a cell when placed into a hypertonic solution and why?  (4 Points)