Question 1

Jenny is trying to lose weight by decreasing the fat in her diet.At the grocery store she is overwhelmed by all the claims on the food product labels,and finally chooses an expensive fat-free frozen dessert.Which of the following would be an appropriate analysis of Jenny's decision?

Accepted Answer

A)  Most frozen desserts are fat free and she should not pay extra for one with a fat-free claim
B)  Since fats contribute 9 kcalories per gram,she can eat twice as many kcalories from this dessert and still lose weight
C)  As long as she makes sure to eat the dessert before 9 p.m.it should not contribute much to her daily kcaloric intake
D)  Fat-free products typically have so much added sugar that the kcalorie count can be as high as in the regular-fat productE) B) and C)
F) None of the above

Question 2

How many double bonds are present in stearic acid?

Accepted Answer

A)  0
B)  1
C)  2
D)  3E) B) and D)
F) None of the above

Question 3

Which of the following organs is NOT known to secrete a lipase?

Accepted Answer

A)  Liver
B)  Stomach
C)  Pancreas
D)  Salivary glandsE) B) and D)
F) C) and D)

Question 4

Which of the following substances CANNOT be absorbed directly into the blood?

Accepted Answer

A)  Glycerol
B)  Long-chain fatty acids
C)  Short-chain fatty acids
D)  Medium-chain fatty acidsE) None of the above
F) B) and D)

Question 5

Which of the following is a feature of phospholipids?

Accepted Answer

A)  Resistant to digestion
B)  Soluble in both water and fat
C)  Highly susceptible to oxidation
D)  Found naturally only in animal foodsE) A) and B)
F) A) and C)

Question 6

How is soluble fiber in the diet thought to help lower blood cholesterol level?

Accepted Answer

A)  It denatures cholesterol in the stomach
B)  It hydrolyzes cholesterol in the intestinal tract
C)  It traps cholesterol in the intestinal tract and thus inhibits its absorption
D)  It enhances excretion of bile leading to increased cholesterol turnoverE) A) and B)
F) A) and C)

Question 7

Spherical complexes of emulsified fats are known as

Accepted Answer

A)  micelles.
B)  chylomicrons.
C)  monolipomicrons.
D)  endogenous bilayer aggregates.E) B) and C)
F) C) and D)

Question 8

Studies show that regular consumption of fatty fish leads to

Accepted Answer

A)  lower blood pressure.
B)  higher blood cholesterol.
C)  greater tendency of the blood to clot.
D)  decreased storage of omega-3 fatty acids.E) None of the above
F) B) and C)

Question 9

Which of the following is NOT a destination for cholesterol?

Accepted Answer

A)  Synthesized into bile
B)  Excreted in the feces
C)  Accumulates on walls of veins
D)  Accumulates on walls of arteriesE) C) and D)
F) B) and D)

Question 10

In which form are most dietary lipids found?

Accepted Answer

A)  Sterols
B)  Glycerols
C)  Triglycerides
D)  MonoglyceridesE) All of the above
F) C) and D)

Question 11

What compound is composed of 3 fatty acids and glycerol?

Accepted Answer

A)  Steroid
B)  Lecithin
C)  Triglyceride
D)  MonoglycerideE) All of the above
F) A) and B)

Question 12

What is the chemical composition of fats?

Accepted Answer

A)  Hexose polymers
B)  Glycogen granules
C)  Fatty acids and glycerol
D)  Combinations of long-chain fatty acidsE) A) and C)
F) All of the above

Question 13

Which of the following is characteristic of the lipase enzymes?

Accepted Answer

A)  Gastric lipase plays a significant role in fat digestion in adults
B)  Intestinal mucosal lipase is responsible for most dietary fat digestion
C)  Salivary gland lipase (lingual lipase) plays an active role in fat digestion in infants
D)  Pancreatic lipase hydrolyzes most dietary triglycerides completely to glycerol and free fatty acidsE) All of the above
F) A) and C)

Question 14

Which of the following is a drawback of olestra consumption?

Accepted Answer

A)  It yields 9 kcalories per gram
B)  It imparts off-flavors to foods
C)  It raises blood glucose levels
D)  It inhibits absorption of vitamin EE) None of the above
F) A) and D)

Question 15

Lipids that are solid at room temperature are known as

Accepted Answer

A)  oils.
B)  fats.
C)  omegas.
D)  glycerols.E) B) and D)
F) None of the above

Question 16

Which of the following information about the fat content per serving is NOT on a food label?

Accepted Answer

A)  The total fat content,in g
B)  The trans fat content,in g
C)  The saturated fat content,in g
D)  The percentage of total kcalories contributed by fatE) A) and C)
F) A) and B)

Question 17

The average daily cholesterol intake (mg) of U.S.women is about

Accepted Answer

A)  110.
B)  230.
C)  360.
D)  925.E) A) and D)
F) B) and C)

Question 18

Ronnie eats a fairly balanced diet,but wants to include a good source of omega-3 fats.Which of the following should be your recommendation?

Accepted Answer

A)  Eggs
B)  Salmon
C)  Low-fat cheeses
D)  Lean chicken breastE) B) and D)
F) C) and D)

Question 19

Which of the following lipids is an essential nutrient?

Accepted Answer

A)  Lecithin
B)  Cholesterol
C)  Stearic acid
D)  Linoleic acidE) All of the above
F) B) and C)

Question 20

Which of the following is a feature of fat in the diet of athletes?

Accepted Answer

A)  A minimum of 20% fat energy in the diet is needed
B)  Energy derived from fat has very little bearing on performance
C)  Optimal performance is found with a high-carbohydrate,15% total fat kcalories diet
D)  Diets with at least 10% total kcalories from fat are still able to provide the recommended amounts of micronutrientsE) A) and B)
F) B) and C)

Exam 5: The Lipids: Triglycerides, phospholipids, and Sterols

Which of the following is a drawback of olestra consumption?

Correct AnswerverifiedShow Answer

The average daily cholesterol intake (mg) of U.S.women is about

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In which form are most dietary lipids found?

Correct AnswerverifiedShow Answer

Which of the following information about the fat content per serving is NOT on a food label?

Correct AnswerverifiedShow Answer

What compound is composed of 3 fatty acids and glycerol?

Correct AnswerverifiedShow Answer

What is the chemical composition of fats?

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Which of the following organs is NOT known to secrete a lipase?

Correct AnswerverifiedShow Answer

Which of the following is a feature of fat in the diet of athletes?

Correct AnswerverifiedShow Answer

Lipids that are solid at room temperature are known as

Correct AnswerverifiedShow Answer

Spherical complexes of emulsified fats are known as

Correct AnswerverifiedShow Answer

Which of the following is characteristic of the lipase enzymes?

Correct AnswerverifiedShow Answer

Which of the following lipids is an essential nutrient?

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Which of the following is NOT a destination for cholesterol?

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Studies show that regular consumption of fatty fish leads to

Correct AnswerverifiedShow Answer

Which of the following is a feature of phospholipids?

Correct AnswerverifiedShow Answer

Jenny is trying to lose weight by decreasing the fat in her diet.At the grocery store she is overwhelmed by all the claims on the food product labels,and finally chooses an expensive fat-free frozen dessert.Which of the following would be an appropriate analysis of Jenny's decision?

Correct AnswerverifiedShow Answer

Ronnie eats a fairly balanced diet,but wants to include a good source of omega-3 fats.Which of the following should be your recommendation?

Correct AnswerverifiedShow Answer

How many double bonds are present in stearic acid?

Correct AnswerverifiedShow Answer

How is soluble fiber in the diet thought to help lower blood cholesterol level?

Correct AnswerverifiedShow Answer

Which of the following substances CANNOT be absorbed directly into the blood?

Correct AnswerverifiedShow Answer

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