1.	Using 10 spice drops of (2 each of 5 different colors) (or other similar soft candy or object capable of being pierced with a toothpick or wire) that you have purchased somewhere, (or colored styrofoam balls, etc.) and 8 tooth picks or straightened paper clips, create two stereoisomers that demonstrate that they have the same kinds and numbers of atoms (drops) but are different molecules. No comments are required. (10 pts) This model must stand on its own and show the 3D nature of the concepts.
2.	What is the difference between an aldehyde and a ketone group? Draw a carbohydrate molecule containing each type of group. What are the naming consequences if a ketone or an aldehyde is present in a simple sugar. In other words, how can you classify a sugar based upon its carbonyl group position? (10 pts)
3.	Explain how carbohydrates are classified based upon number of carbons and number of monosaccharides present. Includes examples by name and image for each level of classification. (10 points)
4.	Given the following formula, explain how you determine if it is a D- or L- isomer.  Formula: C7H14O7 (10 pts)
5.	Explain why the simple placement of a hydroxyl group in the building blocks of a polysaccharide can determine the digestability of polysaccharides. (10 points) (You will need to read ahead for this one.)

Bring your model to class on the day it is due.  You will be immediately evaluated and then you may keep your model. 

Please retype the question before you answer it. This homework should be no longer than a page per question including drawings for Q#2-5.

After I grade this homework and return the work to ANY student, I will no longer accept late work from any other. In the meantime, the usual 5% per day penalty will apply.

This assignment has a value of 8% of your trimester grade.

Finally, I photocopied the answers from my students last year, so if your answers match theirs... YOU LOSE.