Exam 26: Lipids

Consider the following structures. Use these to answer the following questions by placing the appropriate Roman numerical in the blank. -Saponification followed by protonation of structure _____ produces three moles of the same saturated fatty acid.

The major lipid component of cell membranes is phospholipids.

Circle the hydrophilic part of sodium 4-dodecylbenzenesulfonate, a synthetic detergent, and put a rectangle around the hydrophobic part.

The structure of andosterone is given below. The following is produced when andosterone is treated with NaBH₄ in ethanol.

What is the structure of oleic acid?

Ca⁺², Mg⁺², and/or Fe⁺³ are responsible for producing soap scum in water.

The general formula for a fat or oil is shown below.

How many triglycerides (including stereoisomers) are there which contain two molecules of stearic acid, and one of myristic acid?

What is the approximate value of pK_a of a bile acid?

Lipids are substances that are in water and in nonpolar organic solvents. Enter the answers separated by a comma.

Compounds that are obtained from the saponification of triglycerides are glycerol and fatty acid salts.

What is the structure of stearic acid?

Cell membranes, which form an effective barrier to the passage of ions and other components into and out of the cell, are composed of a lipid bilayer.

The number of carbon atoms in the unsaturated fatty acid from which prostaglandins are derived is _____.