AP Computer Visualization
When you click Submit (at the bottom of this web page) it will save your
work on the server for me.
DO NOT Click submit more than once!
8/29 in class; If you are absent 9/1.
TAB OR USE THE MOUSE Between the
Answer the questions as best you can. The boxes will expand as you type if you need more space.
(Don't worry if it is a one word answer. The box size is standard.)
(Since you can work in pairs, put both names!)
Click on the link below, and switching between this
document and the open browser answer the questions. Most of the answers can be
found through observation, but some require thought or research on the web.
This assignment will be posted on the web, and you can
e-mail it to me if you want to complete it on your own time. You will NOT get
additional time with the laptops. Do what you can.
If you are going to work at home use the following link.
http://c4.cabrillo.edu/projects/library/duoviewer/index.html You may need to
install Chime (search Chime installer).
In school you will use a program called RASMOL which is in
a folder on the desktop of the laptops. In the folder is a program file that
looks like 3 linked balls. After you click on the program click on file and open
one of the models. The models we will look at come in two formats. Brookhaven
Spend a couple of minutes “playing” with the program so
that you can easily call up molecules and compare them. You should be able to
rotate molecules, zoom in on them etc.
Click on ball and stick (it is easier to visualize
molecules that way). (In RASMOL you change visualizations with the top menu).
Look at the following inorganic molecules and briefly
describe them (linear, polar/non-polar etc.) They can be found as "Brookhaven"
Question 1: Ammonia
Question 2: Water
Question 3: Carbon Dioxide
Question 4: Oxygen
Question 5: Ozone
Remember, the boxes will expand as you type if you need more space.
Question 6: In this visualization, what does a line represent? How many
electrons are in a single line?
Question 7: In the section of alcohols, compare methanol, ethanol, n-propyl
What makes an alcohol an alcohol?
All of the rest of the molecules are in MDL format and if you are using
RASMOL you need to change the "File of type" box when you try and open the
Question 8: In the section on carbohydrates look at D-Glucose,
D-Fructose, lactose, and sucrose. Describe the general structure of a sugar. Is
it polar/non-polar? What is a disaccharide?
Question 9: In the section on lipids, look at oleic acid, palmitic
acid, and the two triglycerides (one with 2 unsaturated fatty acids and the
other all saturated fatty acids). Describe the general structure of a lipid?
Is it polar/non-polar? What is the difference between saturated and un-saturated
Question 10: In the section on amino acids and proteins, look at
alanine, glycine, cysteine, gly-gly, and the first choice (ala-cys-lys-asp-phe-cys)
in the polypeptide sections. What is the general structure of an amino acid?
What is a peptide bond? Why are proteins important?
Question 11: Under nucleotide look at ribose and deoxyribose. How are
they similar? Different?
Question 12: Under nucleotide look at purine and pyrimidine. How are
they similar? Different?
Question 13: Under nucleotide look at uracil, thymidine, cytosine,
guanine, adenine. How are they similar? Different? Assign each to a “category”
as either a purine or a pyrimidine.
Question 14: General conclusions: What do molecules look like? Why do
we use visualizers?
Question 15: "System" conclusion. Was this easier/harder than writing by
hand on a worksheet? Which would you prefer in the future, worksheets or
computer forms? Why? (For me, handwriting is also an issue!)