Nutrition exam
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