ENZYME PROTEINS

What is the general structure of enzyme proteins? How does the structure of enzymes allow them to fulfil their biological role?

Transposable elements/ Transposons

What are transposons? How are they indentified in a genome? What is the mechanism of transposition?

essay queation regarding a food manufacturers claim of having a fat free cake mix.

a food manufacturer is advertising a new cake mix as fat free. Scientists at the US FDA are testing the product to see if it truly lacks fat. hydrolysis of the cake mix yeilds glucose, fructose, glycerol, anumber of amino acids, and several kinds of molecules with long hydrocarbon chains. Further analysis shows that most of the hydrocarbon chains have a carboxyl group at one end. What would you tell the food manufacturer if you were the spokes person for the FDA?

methyl (CH3) groups added to outer surface of drugs to pass through cell membranes and adding a charged group do decrease drugs passing through membranes

When biomedical researchers design drugs that must enter cells to be effective, they sometimes add methyl (CH3) groups all over the outer surface to make the drug molecules more likely to pass through cell membranes. Conversly,when researchers design drugs that act on the exterior of cell membranes, they sometimes add a charged group to decrease the likelihood that the drugs will pass through membranes and enter cells. Explain why these strategies make sense.

macromolecules

You are the owner of a company that sells cleaning products. The people in research and development have two new products for you to review. The first is a type of hand soap that they say cuts grease because "it is from lipid and like dissolves like." The second is a laundry detergent that is supposed to get out grass strains very well because "it uses a protein and protein gets out proteins." Using your knowledge of macromolecules, evaluate these claims and give the reasoning behind you decision to approve one, both or neither of these projects.