______________ are sensory neurons that receive odor molecules and communicate with the olfactory nerve.

What are the cells responsible for forming bone matrix?

Which of the following is TRUE of an osteon?

Name the following compound:     P2O6  

A: JOINT [jointA] B: MARK [markingB] SIDE [side]

BONE [bone] B: MARKING [markingB]

A: JOINT [jointA]  B: MARK [markingB] SIDE [side]

Consider the following demand curve:  If P = $7, what is known about the price elasticity of demand? 

Suppose that the price of Y is $40 and the price of X is $20.  Consumer income is $800.   At the optimal consumption bundle, what is the marginal rate of substitution?  Hint: use the fact that the indifference curve is tangent to the budget line at this consumption bundle.  

Suppose there are only two consumers in the market for good X. The total quantity demanded in the market at a price of $3 is _____.