Review Problems

2. What does it mean when phospholipids are said to be amphipathic?

   1. They are part of micelles.
   2. They are a type of cholesterol.
   3. They have both hydrophobic and hydrophilic regions.
   4. They have a sphingosine backbone.

3. What is the difference between saturated and unsaturated fatty acids and how does this influence their structure?

4. What type of lipid is responsible for ABO blood typing?

   1. Waxes
   2. Glycerophospholipids
   3. Phospholipids
   4. Sphingolipids

5. Explain the role of cholesterol in stabilizing the cell membrane.

6. Describe the major functions of each of the fat-soluble vitamins.

7. What type of lipid is the best for energy storage?

   1. Prostaglandins
   2. Triglycerides
   3. Cholesterol
   4. Steroids

8. How are surfactants able to combine two separate phases (such as oil and water) into one phase?