Using the table below, which of the following dietary lipids has the greatest percentage of unsaturated fats? TABLE 8.2 Fatty Acid Compositions of Some Dietary Lipids* Lauric and Myristic 5 Source Beef Milk Coconut Corn Olive Palm Safflower Soybean Sunflower O Palm O Beef O Milk O Coconut 74 Palmitic 24-32 25 10 8-12 9 39 6 9 6 Stearic 20-25 12 2 3-4 2 4 3 6 1 Oleic 37-43 33 7 19-49 84 40 13 20 21 Linoleic 2-3 3 34-62 4 8 78 52 66

Block diagrams representing the general structures of two types of lipids are drawn. Which terms describe each diagram correctly? Check all that apply for each part. Part 1 of 2 Hydrolyzable lipid Nonhydrolyzable lipid Steroid Phospholipid Phosphoacylglycerol Triacylglycerol None of the above Part 2 of 2 Hydrolyzable lipid Phosphoacylglycerol Triacylglycerol Nonhydrolyzable lipid Wax Phospholipid None of the above E Q

Cholesterol is synthesized by all animal cells and is an essential structural component of animal cell membranes. Cholesterol is the most common steroid and is mainly synthesized in the liver. Cholesterol also serves as a precursor for several important biological compounds including all, EXCEPT: X A B C x D testosterone bile salts vitamin D insulin H H N

Samples of three different triglycerides, A, B, and C, were tested to determine the melting point of each one. The results of the tests are shown in the graph. The length of the fatty acids in A, B, and C is the same. Which of the three triglycerides is likely to have the fewest double bonds in the fatty acid side chains? triglyceride C There is no way of knowing based on the information available triglyceride A triglyceride B