(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)

4.         Define the following terms:  (4 Points)               Decomposition reaction –               Synthesis  reaction –               Salt –               pH –

12.       What is the function of each of the following organelles.  (4 Points)             Mitochondria –               Lysosome –               Smooth endoplasmic reticulum –               Golgi apparatus –

3.         Given the following atomic symbol, answer the following questions: (5 Points)                 How many protons?  _____       electrons?  _____          neutrons?  _____                                  What is the mass number?  _____                      How many electrons are in its valence shell?  _____

Some jobs are very stressful. These jobs, in which employees are expected to display certain feelings in order to satisfy organizational role expectations are known as: