How many valence electrons are in: (A)  Ca  (B)  N  (C)  Al 

What is the theme of the biblical story embraced by the author(s) of Go Down, Moses?How does it connect with their personal story? (no more than 3 sentences). 

Glucose sensors within the glucose channels of a neuron are an example of which?

When a single presynaptic neuron makes contact with many other neurons, and some of those neurons readily undergo an action potential while others are only facilitated; this is referred to as which?

Match the description off of the periodic table to the element

A hypothetical element has 2 isotopes.  The mass of the first isotope is 47.75 amu with a 25.00 % abundance.  The mass of the second isotope is 49.75 amu with a 75.00 % abundance.  What is the average atomic mass of the element? (You must show all of your work by using the equation editor, in order to get credit for this answer.)

Lactation during pregnancy is a textbook example of a positive feedback loop.

Name the following compounds (A)  MgCl2  (B)  Na2SO4  (C)  Al2O3 (D)  FeCO3 (E)  AgOH   

How does the poem/song you selected utilize a biblical text? (2-3 sentences) (4 points)

Which neuroglial cell is responsible for the creation of cerebral spinal fluid?