From the group of compounds shown on the left, identify those that fit the following descriptions:
1. Which is a triglyceride? ............... 2. Which is a prostaglandin? ............... 3. Which is cholesterol (a steroid)? ........ 4. Which is a sesquiterpene? ................ 5. Which is stearic acid? .................... 6. Which is a phospholipid? ............... 7. Which are found in cell membranes? ....