Chapter 3: Biological MoleculesLinks |
The following Web sites are just some of the interesting resources related to the life of a cell. As you link to the sites, compare and contrast the information on the site with what you have learned in class, from the textbook, and from other sources you have read. Be sure to share interesting sites with your classmates.
1) Why Is Carbon So Important in Biological Molecules?
Click here to see the molecular structure of aspirin, an organic molecule most of us have some direct experience with. You’ll be surprised at how simple the structure is!
This site displays organic molecules in a way that is easy to understand. You can use the links to observe many different molecular models.
Scientists interested in the possibility of extraterrestrial life are constantly on the lookout for key molecular indicators, normally water and organic molecules. As this short news article points out, both have been found on Europa, one of Jupiter’s moons.
2) How Are Organic Molecules Synthesized?
The structures and characteristics of the twenty building blocks of proteins can be viewed at this site.
You will find great molecular models of nucleotides at this site. Examine the view from the top of a DNA double helix.
3) What Are Carbohydrates?
This site provides a good overview of carbohydrate structure and biochemistry.
This site outlines the basics of carbohydrates and their role as macronutrients in the human body.
4) What Are Lipids?
Have you ever wondered what kinds of molecules are in milk? Check out this site, particularly the links to milk lipids. These are what is removed from whole milk to make skim milk.
Cholesterol is a complex molecule needed for membrane function, but it can lead to heart disease if too much is present in the blood.
This Web site gives a thorough overview of the structure, function, and uses of fats and oils. There are many links to relevant and interesting information.
5) What Are Proteins?
This Web site provides excellent information on the shape of proteins. Follow the links to view the different structures. Click on the "mono" to see a single image. You can also download three-dimensional images but will need special goggles and a special program to view them.
This interactive Web site uses words and animations to explain the concept of protein folding and its importance in the functioning of proteins.
6) What Are Nucleic Acids?
This interactive exercise walks you through the basics of DNA structure.
The overall structure of nucleotides in DNA and RNA can be viewed here.
This Web site gives you the chance to learn about DNA structure and function by building your own DNA molecules.