Description of Lipids

1) What are the ingredients of a cephalin?

2) Which fatty acid is always unsaturated in a cephalin? Why?

3) What is the enzyme system used in the formation of the prostalandins and thromboxanes?

4) Would you expect sodium ions (Na+) to be able to pass easily into a cell through bi-layer membrane wall? Why or Why not?

5) Which are the bile salts that cholesterol can be converted into which act as detergents?

6) In prostagladin E2, what is meant by the usage of the letter E and the number 2?

7) Using any of the following, how would you make a structural diagram of LECITHIN and of SPINGOMYELIN?

CH2OHCHOHCH2OH H3PO4 C17H35COOH HOCH2CH2NH2

CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH HOCH2CH2N(CH3)3

HOCH2CHNH2COOH CH3(CH2)7CH=CH(CH2)7COOH

C15H29CHOHCHNH2CHOH