Question 1

Which of the following statements is true of linoleic acid?

Accepted Answer

A)  It is an essential saturated fatty acid. 
B)  It is an essential unsaturated fatty acid. 
C)  It is not an essential fatty acid but is a saturated fatty acid. 
D)  It is not an essential fatty acid but is an unsaturated fatty acid. 
A)  It is an essential saturated fatty acid. 
B)  It is an essential unsaturated fatty acid. 
C)  It is not an essential fatty acid but is a saturated fatty acid. 
D)  It is not an essential fatty acid but is an unsaturated fatty acid.

Question 2

Which of the following does not lead to an increase in HDL in the body?

Accepted Answer

A)  exercise 
B)  weight gain 
C)  premenopause 
D)  None, they all result in an increase in HDL. 
A)  exercise 
B)  weight gain 
C)  premenopause 
D)  None, they all result in an increase in HDL.

Question 3

Which of the following includes all the components of glycerophospholipids?

Accepted Answer

A)  glycerol, one fatty acid, two phosphate groups, and an alcohol 
B)  glycerol, two fatty acids, a phosphate group, and an alcohol 
C)  either of these 
D)  none of these 
A)  glycerol, one fatty acid, two phosphate groups, and an alcohol 
B)  glycerol, two fatty acids, a phosphate group, and an alcohol 
C)  either of these 
D)  none of these

Question 4

Which of the following lipoproteins have the highest percentage (dry weight) of phospholipids?

Accepted Answer

A)  chylomicrons 
B)  HDLs 
C)  LDLs 
D)  VLDLs 
A)  chylomicrons 
B)  HDLs 
C)  LDLs 
D)  VLDLs

Question 5

What is the function of primary messengers such as steroid hormones?

Accepted Answer

A)  to mediate hormonal responses 
B)  to deliver signals from one part of the body to another part 
C)  both of these 
D)  none of these 
A)  to mediate hormonal responses 
B)  to deliver signals from one part of the body to another part 
C)  both of these 
D)  none of these

Question 6

Which of the following triglycerides is most likely to be a fat?

Accepted Answer

A)  one that contains short-chain, saturated fatty acids 
B)  one that contains short-chain, unsaturated fatty acids 
C)  one that contains long-chain, saturated fatty acids 
D)  one that contains long-chain, unsaturated fatty acids 
A)  one that contains short-chain, saturated fatty acids 
B)  one that contains short-chain, unsaturated fatty acids 
C)  one that contains long-chain, saturated fatty acids 
D)  one that contains long-chain, unsaturated fatty acids

Question 7

Which of the following statements about anabolic steroids is false?

Accepted Answer

A)  They are illegal in sporting events. 
B)  They provide long-term benefits to athletes. 
C)  They impair the performance of female athletes. 
D)  They increase muscle mass. 
A)  They are illegal in sporting events. 
B)  They provide long-term benefits to athletes. 
C)  They impair the performance of female athletes. 
D)  They increase muscle mass.

Question 8

Which of the following chemical groups is present only in taurocholate but not in glycocholate?

Accepted Answer

A)  -SO3- 
B)  -PO4- 
C)  -NO2- 
D)  -NH4+ 
A)  -SO3- 
B)  -PO4- 
C)  -NO2- 
D)  -NH4+

Question 9

Which of the following contain(s) free cholesterol?

Accepted Answer

A)  HDL 
B)  gallstones 
C)  LDL 
D)  all of these 
A)  HDL 
B)  gallstones 
C)  LDL 
D)  all of these

Question 10

Which of the following is critical to prevent the overaccumulation of cholesterol in the body?

Accepted Answer

A)  the optimum concentration of carbon dioxide in the body 
B)  an adequate number of LDL receptors on the surface of cells 
C)  the increased removal of cholesterol through stool 
D)  an adequate number of HDL receptors on the surface of cells 
A)  the optimum concentration of carbon dioxide in the body 
B)  an adequate number of LDL receptors on the surface of cells 
C)  the increased removal of cholesterol through stool 
D)  an adequate number of HDL receptors on the surface of cells

Question 11

How many carbon atoms are present in a steroid ring?

Accepted Answer

A)  15 
B)  16 
C)  17 
D)  18 
A)  15 
B)  16 
C)  17 
D)  18

Question 12

Which of the following linkages is found in glycerophospholipids?

Accepted Answer

A)  glycerol-fatty acid-phosphate 
B)  glycerol-phosphate-fatty acid 
C)  phosphate-glycerol-glucose 
D)  none of these 
A)  glycerol-fatty acid-phosphate 
B)  glycerol-phosphate-fatty acid 
C)  phosphate-glycerol-glucose 
D)  none of these

Question 13

Which of the following chemical compounds is found in glycolipids but not in other complex lipids?

Accepted Answer

A)  a carbohydrate group 
B)  a fatty acid 
C)  a sphingosine molecule 
D)  none of these 
A)  a carbohydrate group 
B)  a fatty acid 
C)  a sphingosine molecule 
D)  none of these

Question 14

According to the FDA, to which of the following categories do trans fats belong?

Accepted Answer

A)  bioactive compounds 
B)  food additives 
C)  "generally recognized as safe" compounds 
D)  flavor enhancers 
A)  bioactive compounds 
B)  food additives 
C)  "generally recognized as safe" compounds 
D)  flavor enhancers

Question 15

Which of the following is not found in cerebrosides?

Accepted Answer

A)  an amide linkage 
B)  a carbohydrate 
C)  a hydroxyl group 
D)  a phosphate group 
A)  an amide linkage 
B)  a carbohydrate 
C)  a hydroxyl group 
D)  a phosphate group

Question 16

Which of the following is true of the London dispersion forces in fatty acids?

Accepted Answer

A)  The London dispersion forces are maximum in unsaturated fatty acids. 
B)  The London dispersion forces are minimum in saturated fatty acids. 
C)  The London dispersion forces are higher for cis unsaturated fatty acids. 
D)  The London dispersion forces act over shorter segments of hydrocarbon chains. 
A)  The London dispersion forces are maximum in unsaturated fatty acids. 
B)  The London dispersion forces are minimum in saturated fatty acids. 
C)  The London dispersion forces are higher for cis unsaturated fatty acids. 
D)  The London dispersion forces act over shorter segments of hydrocarbon chains.

Question 17

Which of the following is a common ingredient in many sports drinks?

Accepted Answer

A)  alanine 
B)  histidine 
C)  serine 
D)  taurine 
A)  alanine 
B)  histidine 
C)  serine 
D)  taurine

Question 18

In glycerophospholipids, what is the position of the phosphate group that is linked to glycerol?

Accepted Answer

A)  It is present on the central carbon atom. 
B)  It is present on the terminal carbon atom. 
C)  It is present either on the central or on the terminal carbon atom. 
D)  It is present on both the central and the terminal carbon atoms. 
A)  It is present on the central carbon atom. 
B)  It is present on the terminal carbon atom. 
C)  It is present either on the central or on the terminal carbon atom. 
D)  It is present on both the central and the terminal carbon atoms.

Question 19

Which structural feature is associated with the prostaglandin F group (PGF)?

Accepted Answer

A)  a carbonyl group at carbon 9 
B)  a carboxylate group at carbon 9 
C)  two hydroxyl groups at carbon 9 and carbon 11 
D)  none of these 
A)  a carbonyl group at carbon 9 
B)  a carboxylate group at carbon 9 
C)  two hydroxyl groups at carbon 9 and carbon 11 
D)  none of these

Question 20

What is the function of anti-inflammatory drugs such as Vioxx and Celebrex?

Accepted Answer

A)  to inhibit the activity of the COX-1 and COX-2 enzymes 
B)  to inhibit the activity of the COX-1 enzyme 
C)  to inhibit the activity of the COX-2 enzyme 
D)  none of these 
A)  to inhibit the activity of the COX-1 and COX-2 enzymes 
B)  to inhibit the activity of the COX-1 enzyme 
C)  to inhibit the activity of the COX-2 enzyme 
D)  none of these

Exam 20: Lipids

Which of the following statements is true of linoleic acid?

Which of the following does not lead to an increase in HDL in the body?

Which of the following includes all the components of glycerophospholipids?

Which of the following lipoproteins have the highest percentage (dry weight) of phospholipids?

What is the function of primary messengers such as steroid hormones?

Which of the following triglycerides is most likely to be a fat?

Which of the following statements about anabolic steroids is false?

Which of the following chemical groups is present only in taurocholate but not in glycocholate?

Which of the following contain(s) free cholesterol?

Which of the following is critical to prevent the overaccumulation of cholesterol in the body?

How many carbon atoms are present in a steroid ring?

Which of the following linkages is found in glycerophospholipids?

Which of the following chemical compounds is found in glycolipids but not in other complex lipids?

According to the FDA, to which of the following categories do trans fats belong?

Which of the following is not found in cerebrosides?

Which of the following is true of the London dispersion forces in fatty acids?

Which of the following is a common ingredient in many sports drinks?

In glycerophospholipids, what is the position of the phosphate group that is linked to glycerol?

Which structural feature is associated with the prostaglandin F group (PGF)?

What is the function of anti-inflammatory drugs such as Vioxx and Celebrex?

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