QUIZ 1. What type of molecule is a triglyceride? a. A tri-alcohol b. An alcohol aldehyde c. A tri-aldehyde d. A tri-ester Answer: d. Triglycerides are fatty acids linked with an ester linkage three times to the same alcohol-based molecule. 2. What type of molecule is glycerol? a. A diester b. A tri-alcohol c. A tri-ester d. An alcohol Answer: b. Glycerol is a tri-alcohol molecule that is used extensively in lipid biochemistry even though it is not a lipid molecule itself and is otherwise polar in organic chemistry. 3. About how many carbon atoms are there in a fatty acid typically seen in nature? a. 6-8 b. 10-12 c. 12-20 d. 24-28 Answer: c. Almost all fatty acids seen in nature have 12-20 carbon atoms to the fatty acid chain. There are several different fatty acids to remember that exist in nature.
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