Chapter 5 quiz

According to the Acceptable Macronutrient Distribution Ranges (AMDRs), what is the maximum amount of fat in grams recommended for an 1800-kcalorie diet? 40 grams 78 grams 20 grams 70 grams

70 grams

What structures deliver products of lipid digestion to the surface of mucosal cells in the small intestine so they can be absorbed? micelles fat globules oil droplets lipoproteins

micelles

What lipid can surround fat droplets and keep them stably suspended in water so that the water and fat do not separate? phospholipids fatty acids cholesterol triglycerides

phospholipids

hich of the following INCORRECTLY pairs the type of fatty acid with foods that are significant sources of it? polyunsaturated fats—tropical oils trans fats—commercial baked goods and packaged snacks monounsaturated fatty acids—nuts and avocado saturated fats—animal fats

polyunsaturated fats—tropical oils

Which of the following is NOT a characteristic of fats? Fats come from plant and animal sources .Fats provide 12 kcals of energy per gram .Fats contribute to the taste and texture of foods. "Fat" primarily refers to triglycerides, which make up 95% of all lipids in our foods.

Fats provide 12 kcals of energy per gram

Increased amounts of cholesterol in this lipoprotein reduce the risk of cardiovascular disease. HDL chylomicrons VLDL LDL

HDL

What lipoprotein delivers its lipid cargo to all cells in the body? LDL HDL VLDL chylomicrons

LDL

Which of the following is a true statement regarding triglyceride digestion? Dietary triglycerides are emulsified only after they are digested. Small intestinal mucosal cells produce the lipase that performs the majority of triglyceride digestion. The majority of triglyceride digestion occurs in the stomach. Triglycerides are digested into free fatty acids and monoglycerides by pancreatic lipase.

Triglycerides are digested into free fatty acids and monoglycerides by pancreatic lipase.

which of the following is NOT true regarding lipid structures? Triglycerides are made up of two fatty acids and a phosphate group bound to one glycerol .Saturated fatty acids consist of a linked chain of carbons atoms with all remaining bonds filled with hydrogen atoms. Polyunsaturated fatty acids contain more than one carbon-carbon double bond. In an unsaturated fatty acid, a carbon-carbon double bond replaces the missing C-H bond so that each carbon still has four bonds.

Triglycerides are made up of two fatty acids and a phosphate group bound to one glycerol

Which of the following foods is NOT a good source of linolenic acid? walnuts flaxseed canola oil almonds

almonds

What compounds are synthesized only in the liver and are required to emulsify dietary lipids in the small intestine? lipoproteins cholesterol phospholipids bile acids

bile acids

Which food category contributes the greatest percent of saturated fat to the U.S. diet? pizza dairy products burgers and sandwiches snacks and sweets

burgers and sandwiches

Which two lipoproteins primarily transport triglycerides? chylomicrons and HDL LDL and HDL chylomicrons and VLDL LDL and VLDL

chylomicrons and VLDL

One serving of an ice cream topping provides 40% DV for saturated fat. The ingredient list reads as follows: Sugar, corn oil, coconut oil, milk, palm oil, soy lecithin, natural and artificial flavor.Which ingredient contributes the most saturated fat? corn oil palm oil coconut oil sugar

coconut oil

Which of the following lipids would NOT be found in cell membranes? cholesterol free fatty acids phospholipidsAl all of these are components of cell membranes.

free fatty acids

Which of the following foods is highest in healthful monounsaturated fats? hazelnuts avocado olive oil albacore tuna

hazelnuts

Which of the following is an essential fatty acid? All of these are essential fatty acids .arachidonic acid linoleic acid eicosapentaenoic acid

linoleic acid

The intake of what type of dietary lipid increases the risk of cardiovascular disease most severely? cholesterol trans fats monounsaturated fats saturated fats

trans fats

Which of the following INCORRECTLY matches the lipid with one of its primary functions in the body? essential fatty acids—provide the required "parent" compounds needed to synthesize eicosanoids triglycerides—a major component of cell membranes cholesterol—used to synthesize steroid hormones phospholipids—form the outer layer or "shell" of lipoproteins

triglycerides—a major component of cell membranes

Which of the following foods is highest in healthful polyunsaturated fats? avocado chicken walnuts butter

walnuts