1. What are some special characteristics of sperm that help them function for fertilization? (4 points) 2. What is the process for sperm to penetrate the egg? (4 points) 3. What happens with the egg and sperm to block polyspermy from happening? Why must polyspermy be blocked? (4 points)

Describe the roles of estrogen and progesterone during the menstrual cycle.

1. Define Meiosis. (4 points) 2. How does it compare and contrast to Mitosis? Include which cells go through Meiosis and which cells go through Mitosis.  (4 points)  

Which of the following best describes the function of the corpus luteum?

What field of science focuses on naming and classifying organisms into a hierarchical system of categories, such as domain, kingdom, and species?

Match the political cartoon to its era. There is only one correct answer and you will only use each era once.

Should the United States have become involved in the conflicts of the 20th century, such as World War I, World War II, Vietnam, or Iraq? Why or why not?

11.  A student is determining the Ideal Gas Law constant with the reaction of calcium carbonate and vinegar as shown below. Rather than using different moles of reactants and measuring volume of gas produced, the student decided to use different temperatures and measure the volume. (WCSP25.[x]) 2 CH3COOH (aq) +  CaCO3 (s)

9.  You found a solution of 0.200 M AgNO3 in the lab.  You think you could make some money if you reduce the silver ions to silver metal according to the following reaction. (WCSP25.[x]) 3 AgNO3 (aq)   +   Al (s) 

7.  A chromatography experiment was used to determine components in a mixture. a.  Calculate the Rf values for spot A and spot B using your ruler. Show your work. Use appropriate significant figures in your measurements and calculations.  (6 points, WCSP25.[x])    b. The stationary phase for the previous chromatogram was cellulose, which is highly polar due to the presence of multiple hydroxyl (OH) groups.  The mobile phase was water.  Given this, identify which amino acid (a building block for proteins) shown below corresponds to spot A and B.  Explain your reasoning. (6 points)   Enter the Rf value of spot A in the box below.