Answer the following questions based on the photographs below.  Label your answers with the letters of each question.  Spelling counts. Be very specific. A. What is the name and the function of the structures shown here? B.  Is this a male or a female? How do you know? C. Is this a male or a female? How do you know? D. Is this a mysticete or an odontocete?  How do you know? E. This is a dorsal view of the cranium of a cetacean. Is this a mysticete or an odontocete?  How do you know?

Disruptive coloration refers to those color patterns that break the outline of the animal (e.g., stripes). Predators may not be able to detect prey with such coloration because they typically focus on the outline of their prey before striking.

10.  Below is an amino acid sequence that codes for both an α-helix and something else.  Copy this sequence onto your notebook paper.         …T N S E D K K R K K N E A L R L A M K F I N F L A R…          a) Draw a box around the region that codes for the α-helix.  Describe two structural features of this region that make it want to be an α-helix.  (6 pts)         b) Circle the region that codes for the “something else”.  What does this code for?  Describe two structural features of this region that helped you identify it as such.  (6 pts)      

True or False. You can visit your instructor in person during her office during office hours. 

True or False. You can make up a discussion board post if you are absent. 

The Critical Analysis Essay counts for _________ percent of your overall course grade. 

In an essay of no shorter than two hundred and fifty words, answer the following questions: Describe the economic, social and political impacts of the massive surge in immigration to the US from 1865-1914.  Who were the “New Immigrants” and how were they different from previous immigrants?  What role did they play in America’s industrialization and urbanization? How did they change the face of America?

A gap junction is a channel that connects adjacent cells. Which one of the following cannot pass through a gap junction?

11.  a) List the two major stabilizing factors of an α-helix, i.e. the ones all helices have.  (4 pts)          b) List the two major stabilizing factors of a β-sheet.  (4 pts)  

Plasmodesmata are cell-cell junctions that are found between _____.