Exam 25: Lipids

What IR stretch would most readily distinguish carnauba wax from paraffin wax?

Arrange the following fatty acids in order of increasing melting point: stearic acid, linolenic, linoleic, and oleic.

Draw the molecule below in a stable chair conformation and indicate whether the circled group is axial or equitorial.

________ lipids are those that can be easily hydrolyzed to simpler constituents.

The following paraminabeolide was isolated from a Formosan soft coral and has been found to have anti-inflammatory action (J. Nat. Prod. 2011, 1132). What is the lipid classification of paraminabeolide?

Modify the phosphatidic acid below so that it becomes a lecithin.

Which of the following terms best describes the compound below?

What organic compounds result when tristearin is heated in aqueous sodium hydroxide?

How many molecules of fatty acid are needed to make one molecule of a cephalin?

Describe the general molecular features which a nonionic detergent would possess.

Which of the following oils is the least polyunsaturated?

Provide the major organic product of the following reaction.

How is a fat distinguished from an oil, (a) based on a physical property difference and (b) based on a difference in molecular structure?

What group of lipids are esters of long-chain fatty acids and long-chain alcohols?

Which of the following is a lecithin?

Which of the following terms best describes the compound below?

Which of the following fatty acids has the lowest melting point?

Lecithins are phospholipids wherein the alcohol choline is esterified to a phosphatidic acid. Provide the structure of choline.

If triolein was transesterified with methanol under basic conditions to form biodiesel, draw the products of this reaction.

Which of the following would not form a micelle?