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

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?

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

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 _____.

All of the following proteins may be found in the extracellular matrix of animal cells EXCEPT _____.

Lysosomes that lack mannose-6-phosphate receptors _____.

How many grains is in 60 mg?

Use the following figure to answer the question.The figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?