Exam 17: Lipids and Their Functions in Biochemical Systems

Cetyl palmitate is a component of spermaceti wax, isolated from the heads of sperm whales, and used in cosmetics.In which solvent would cetyl palmitate be expected to have the greatest solubility?

The melting point of saturated fatty acids decreases with increasing number of carbons.

Painful menstruation may be the result of an excess of which of the following eicosanoids?

Which statement best describes how lipids are defined?

What highly unsaturated fatty acid and precursor to many prostaglandins, is synthesized from the fatty acid linoleic acid in the body?

Which of the following is NOT classified as a type of eicosanoid?

Which lipid is found in egg yolks and soybeans and is used as an emulsifying agent in ice cream?

Phospholipids have a polar "head" and a nonpolar "tail."

A correlation appears to exist between large quantities of saturated fats in the diet and several forms of cancer.

Cyclooxygenase catalyzes the conversion of arachidonic acid into PGH₂.What drug inhibits this enzyme?

Which of the statements concerning the lipid bilayer of cell membranes is INCORRECT?

Which of the following hormone-like molecules is NOT produced from arachidonic acid?

The most abundant lipids found in membranes are the phosphoglycerides.

When palmitic acid, a 16-carbon saturated fatty acid, reacts with a 30-carbon unbranched alcohol, a wax is formed.What is the structure of this wax?

Which statement concerning the structure of a fatty acid is FALSE?

Which class of lipoprotein is bound to plasma cholesterol and transports it from the peripheral tissues to the liver?

The two essential fatty acids are oleic and linoleic acid.

What is the most abundant class of membrane lipids?

Which of the following substances do not occur in lipoproteins?

The product of the reaction of decanoic acid with n-propanol under acidic conditions is isopropyl decanoate.