Chapter 5 Quiz

Select the correct statement regarding fat digestion a) bile is stored in the liver b) digestion primarily occurs in the stomach c) bile breaks fat into small droplets d) the triglyceride molecule is broken down into one free fatty acids and two diglycerides

c) bile breaks fat into small droplets

Choose the incorrect statement a) most of the fat in our body is stored in the form of triglycerides b) phospholipids aid in transporting fats in our bloodstream c) sterols are lipids containing a single ring structure d) in the small intestine, plant sterols appear to block dietary cholesterol absorption

c) sterols are lipids containing a single ring structure

Explain how the straight, rigid shape of the saturated and trans fatty acids we eat affects our health

Both trans and saturated fatty acids, because of their straight, rigid shape, can pack tightly together. Other fatty acids that contain one or more double bonds that have bends or kinks in their shape, and tend to be more fluid at room temperature. Research over 200 years has shown that diets high in saturated fatty acids increase blood cholesterol and risk of heart disease.

Fats in chylomicrons are taken up by cells with the help of a) lipoprotein lipase b) micelles c) sterols d) pancreatic enzymes

a) lipoprotein lipase

Triglycerides with a double bond at one part of the molecule are referred to as a) monounsaturated fats b) hydrogenated fats c) saturated fats d) sterols

a) monosaturated fats

The risk for heart disease is increased in people who a) consume a diet high in polyunsaturated fats b) consume a diet high in industrial trans fats c) consume a diet high in plant sterols d) sterols

b) consume a diet high in industrial trans fats

One of the most sensible ways to reduce body fat is to a) limit intake of fat to less than 15% of total energy consumed b) exercise regularly and watch portion sizes c) avoid all consumption of trans fatty acids d) restrict total energy to 5020KJ *1200kcal) per day

b) exercise regularly and watch portion sizes

Which one of the following is strongly associated with an increase in blood cholesterol a) high-density lipoproteins b) low-density lipoproteins c) dietary cholesterol d) free fatty acids

b) low-density lipoproteins

Omega-3 fatty acids are a) a form of trans fatty acid b) metabolized in the body to arachidonic acid c) synthesized in the liver and small intestine d) found in leafy green vegetables, flaxseeds, soy milk, and fish

d) found in leafy green vegetables, flaxseeds, soy milk, and fish