Question 1

In addition to the carboxyl group, which of the following functional groups is found in the fatty acids found in triglycerides?

Accepted Answer

A)  amino 
B)  carbonyl 
C)  hydroxyl 
D)  none of these 
A)  amino 
B)  carbonyl 
C)  hydroxyl 
D)  none of these

Question 2

Where is cholesterol synthesized?

Accepted Answer

A)  in the liver 
B)  in the pancreas 
C)  in the spleen 
D)  in none of these 
A)  in the liver 
B)  in the pancreas 
C)  in the spleen 
D)  in none of these

Question 3

Which of the following has the largest percentage of cholesterol and cholesterol esters?

Accepted Answer

A)  chylomicrons 
B)  HDL 
C)  LDL 
D)  VLDL 
A)  chylomicrons 
B)  HDL 
C)  LDL 
D)  VLDL

Question 4

In glycerophospholipids where is the phosphate group attached to glycerol?

Accepted Answer

A)  at the middle carbon only 
B)  at a terminal carbon only 
C)  at either the middle or a terminal carbon 
D)  at both the middle and a terminal carbon 
A)  at the middle carbon only 
B)  at a terminal carbon only 
C)  at either the middle or a terminal carbon 
D)  at both the middle and a terminal carbon

Question 5

Drugs such as Vioxx and Celebrex do which of the following?

Accepted Answer

A)  cause formation of lipids which increase the risk of heart attacks 
B)  inhibit COX-1 activity 
C)  both a and b 
D)  neither a nor b 
A)  cause formation of lipids which increase the risk of heart attacks 
B)  inhibit COX-1 activity 
C)  both a and b 
D)  neither a nor b

Question 6

How many carbon atoms are associated with the steroid structure?

Accepted Answer

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

Question 7

If a triglyceride contains linoleic, linolenic and oleic acids how many moles of hydrogen are required to fully hydrogenate one mole of this triglyceride?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
A)  3 
B)  4 
C)  5 
D)  6

Question 8

Which of the following is a reactant in a saponification reaction?

Accepted Answer

A)  a strong acid 
B)  a weak acid 
C)  a strong base 
D)  a weak base 
A)  a strong acid 
B)  a weak acid 
C)  a strong base 
D)  a weak base

Question 9

Examine the following structure.  
-Examine the following ball-and-stick model. Atoms other than carbon and hydrogen are labeled with the name of the element.   Which of the following correctly characterizes this substance?

Accepted Answer

A)  complex lipid 
B)  synthesis is increased by high serum concentrations 
C)  soluble in water 
D)  present in cell membranes 
E)  None of these correctly characterizes this substance. 
A)  complex lipid 
B)  synthesis is increased by high serum concentrations 
C)  soluble in water 
D)  present in cell membranes 
E)  None of these correctly characterizes this substance.

Question 10

What is the function of secondary messengers such as prostaglandins?

Accepted Answer

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

Question 11

Which of the following fatty acids is(are) likely to be found in a triglyceride?

Accepted Answer

A)  CH3(CH2)15COOH 
B)  CH3(CH2)16COOH 
C)  both a and b 
D)  neither a nor b 
A)  CH3(CH2)15COOH 
B)  CH3(CH2)16COOH 
C)  both a and b 
D)  neither a nor b

Question 12

Consider the following structure.   Which of the following is a correct classification for this substance?

Accepted Answer

A)  fatty acid 
B)  glycerol 
C)  triglyceride 
D)  diester 
A)  fatty acid 
B)  glycerol 
C)  triglyceride 
D)  diester

Question 13

Lipids perform which of the following functions?

Accepted Answer

A)  They store energy within fat cells. 
B)  They serve as chemical messengers. 
C)  They serve as membrane components. 
D)  All of the above are functions of lipids. 
A)  They store energy within fat cells. 
B)  They serve as chemical messengers. 
C)  They serve as membrane components. 
D)  All of the above are functions of lipids.

Question 14

Which of the following linkages can be found in cerebrosides?

Accepted Answer

A)  α-fructosidic 
B)  β-fructosidic 
C)  α-glucosidic 
D)  β-glucosidic 
A)  α-fructosidic 
B)  β-fructosidic 
C)  α-glucosidic 
D)  β-glucosidic

Question 15

Which of the following is choline?

Accepted Answer

A)  HOCH2CH2NH2 
B)    
C)  [HOCH2CH2N(CH3)3] + 
D)  none of these 
A)  HOCH2CH2NH2 
B)    
C)  [HOCH2CH2N(CH3)3] + 
D)  none of these

Question 16

Which of the following 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 17

Which of the following provide a mechanism for the transport of nonpolar molecules through a membrane?

Accepted Answer

A)  active transport 
B)  diffusion 
C)  specific channels 
D)  all of these 
A)  active transport 
B)  diffusion 
C)  specific channels 
D)  all of these

Question 18

Which of the following is generally called "good cholesterol"?

Accepted Answer

A)  chylomicrons 
B)  HDL 
C)  LDL 
D)  VLDL 
A)  chylomicrons 
B)  HDL 
C)  LDL 
D)  VLDL

Question 19

The anti-clotting properties of aspirin are reduced by which of the following?

Accepted Answer

A)  acetaminophen 
B)  ibuprofen 
C)  diclofenac 
D)  all of these 
A)  acetaminophen 
B)  ibuprofen 
C)  diclofenac 
D)  all of these

Question 20

Which of the following is found in cephalins?

Accepted Answer

A)  choline 
B)  ethanolamine 
C)  inositol 
D)  none of these 
A)  choline 
B)  ethanolamine 
C)  inositol 
D)  none of these

Exam 21: Lipids

In addition to the carboxyl group, which of the following functional groups is found in the fatty acids found in triglycerides?

Where is cholesterol synthesized?

Which of the following has the largest percentage of cholesterol and cholesterol esters?

In glycerophospholipids where is the phosphate group attached to glycerol?

Drugs such as Vioxx and Celebrex do which of the following?

How many carbon atoms are associated with the steroid structure?

If a triglyceride contains linoleic, linolenic and oleic acids how many moles of hydrogen are required to fully hydrogenate one mole of this triglyceride?

Which of the following is a reactant in a saponification reaction?

Examine the following structure. -Examine the following ball-and-stick model. Atoms other than carbon and hydrogen are labeled with the name of the element. Which of the following correctly characterizes this substance?

What is the function of secondary messengers such as prostaglandins?

Which of the following fatty acids is(are) likely to be found in a triglyceride?

Consider the following structure. Which of the following is a correct classification for this substance?

Lipids perform which of the following functions?

Which of the following linkages can be found in cerebrosides?

Which of the following is choline?

Which of the following is true of linoleic acid?

Which of the following provide a mechanism for the transport of nonpolar molecules through a membrane?

Which of the following is generally called "good cholesterol"?

The anti-clotting properties of aspirin are reduced by which of the following?

Which of the following is found in cephalins?

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