Nutrition exam

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How much energy is contributed by one gram of lecithin in a dietary supplement ?

9 kcal

Approximately what percentage of the lipids in foods are triglycerides?

95

What percentage of stored body fat is in the form of triglycerides?

99

After a meal,most of the fat that eventually empties into the blood is in the form of particles know as

Chylomicrons

Which of the following has the highest percentage of its fats in saturated form?

Coconut oil

Which of the following has the highest percentage of its fat in polyunsaturated form

Corn oil's

Which of the following is a factor that determines that hardness of a fat at a given temperature?

Degree of saturation

Which of the following is and omega 3 fat?

Docosahexaenoic acid

Among the following which would be the least effective method to control blood cholesterol levels?

Eat more insoluble fiber

Which of the following has the highest percentage of its fat in polyunsaturated form?

corn oil

Which of the following is considered a major source of polyunsaturated fat ?

corn oil

Bile is known to assist in the absorption of

fat only

What is the immediate precursor for the eicosanoids?

fatty acids

What is the storage site of bile?

gallbladder

What are the precursors for synthesis of the eicosanoids?

long chain polyunsaturated fatty acids

Which of the following lipoproteins contains the highest percentage of cholesterol?

low-density lipoprotein

Studies show that regular consumption of fatty fish leads to

lower blood pressure

Spherical complexes of emulsified fats are known as

micelles

What type of fatty acid is found in high amounts in olive oil ?

monounsaturated

What type of fatty acid is found in high amounts in olive oil?

monounsaturated

Characteristics of hydrogenated oils include all of the following except

products containing them become rancid sooner, contributing to a shorter shelf life

Which of the following foods contains cholesterol?

roasted turkey

Which of the following contains the least cholesterol per serving ?

steamed corn

In which form are most dietary lipids found?

triglycerides

What is the highest total blood cholesterol concentration (mg/dL) that falls within the desirable range?

199

According to the Dietary Guidelines, what should be the maximum daily intake of cholesterol on 2500-kcalorie diet?

300 mg

Which of the following foods contains the least amount of cholesterol per serving ?

Butter

A low risk of cardiovascular disease correlates with high blood levels of

High-density lipoproteins (HDL)

Which of the following is a characteristic of the blood cholesterol level?

It can be lowered more effectively by reducing dietary intake of saturated fat than of cholesterol

A high risk of heart attack correlates with high blood levels of

Low-density lipoproteins (LDL)

Which of the following structural features of fatty acids determine their susceptibility to spoilage by oxygen?

Number of double bonds

Which of the following is a feature of the lipid content of foods?

Omega-3 fats are found in fish

Which of the following is a property of dietary lipids

Omega-3 fatty acids are always unsaturated

All of the following are rich sources of polyunsaturated fatty acids except

PALM OIL

Which of the following compounds is missing 4 or more hydrogen atoms?

Polyunsaturated fatty acid

Which of the following vegetable oils is a good source of omega 3 fatty acids?

canola

Which of the following sources of lipids should be substituted for saturated fats to help lower blood cholesterol levels?

canola oil

What is the major sterol in the diet?

cholesterol

Oil that is partially hydrogenated sometimes changes one or more of its double bond configurations from

cis and trans

Which of the following has the highest percentage of its fat in saturated form?

coconut oil

Lipids differ in their degree of saturation or unsaturation due to their number of

double bonds

Chylomicrons are synthesized within the

intestinal cells

Which of the following is a feature of choline?

it is a part of lecithin

Which of the following lipids is an essential nutrient ?

linoleic acid

The oils found in walnuts,soybeans , flaxseed, and wheat germ represent a good source of preformed

linolenic acid

Each of the following may act as an emulsifier in the intestinal tract except

pancreatic lipase


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