Question 1

To which class of compounds do waxes belong?

Accepted Answer

A)   alcohols
B)   carboxylic acids
C)   esters
D)   ethersE) All of the above
F) A) and C)

Question 2

In which of the following body structures are cerebrosides found?

Accepted Answer

A)   osteocytes
B)   skeletal tissues
C)   nerve synapses
D)   nephrocytesE) None of the above
F) B) and C)

Question 3

Which hormone triggers ovulation?

Accepted Answer

A)   estradiol
B)   luteinizing hormone
C)   progesterone
D)   none of theseE) A) and B)
F) B) and D)

Question 4

Which of the following fatty acids is the least abundant in higher plants and animals?

Accepted Answer

A)   palmitic acid
B)   stearic acid
C)   oleic acid
D)   linolenic acidE) A) and D)
F) All of the above

Question 5

Which type of transport does the sodium-potassium pump enable?

Accepted Answer

A)   primary active transport
B)   secondary active transport
C)   simple diffusion
D)   facilitated diffusionE) A) and C)
F) B) and C)

Question 6

Which of the following compounds are exclusively found in glycolipids?

Accepted Answer

A)   carbohydrates
B)   phosphate groups
C)   amines
D)   hydroxyl groupsE) A) and B)
F) None of the above

Question 7

What is an essential fatty acid?

Accepted Answer

A)   A fatty acid that the body can synthesize from precursor molecules
B)   A fatty acid that must be a part of our diet since we cannot synthesize it
C)   Both of these
D)   None of theseE) All of the above
F) A) and B)

Question 8

Which of the following is found in thromboxanes?

Accepted Answer

A)   a β-lactam ring
B)   a cyclic acetal group
C)   a cyclic ether group
D)   none of theseE) None of the above
F) B) and C)

Question 9

Which of the following physiological processes involves bile salts?

Accepted Answer

A)   digestion
B)   the removal of excess cholesterol
C)   both digestion and the removal of excess cholesterol
D)   neither digestion nor the removal of excess cholesterolE) A) and B)
F) A) and D)

Question 10

Which of the following fatty acids has the lowest melting point?

Accepted Answer

A)   stearic acid
B)   oleic acid
C)   linoleic acid
D)   linolenic acidE) None of the above
F) A) and D)

Question 11

Which of the following lipoproteins carry the highest percentage (dry weight)  of cholesterol?

Accepted Answer

A)   HDLs
B)   LDLs
C)   VLDLs
D)   chylomicronsE) All of the above
F) C) and D)

Question 12

Which of the following statements is true of lipids?

Accepted Answer

A)   They have a specific functional group.
B)   They are the least diverse class of biomolecules.
C)   They are soluble in diethyl ether.
D)   They are mostly defined by their structure.E) A) and B)
F) A) and C)

Question 13

Which structural feature is associated with the prostaglandin E group (PGE) ?

Accepted Answer

A)   a carbonyl group at carbon 9
B)   a carboxylate group at carbon 9
C)   a hydroxyl group at carbon 9
D)   none of theseE) C) and D)
F) All of the above

Question 14

Which of the following lipoproteins transport cholesterol to the liver?

Accepted Answer

A)   chylomicrons
B)   HDLs
C)   LDLs
D)   VLDLsE) None of the above
F) A) and B)

Question 15

How do bile salts remove excess cholesterol from the body?

Accepted Answer

A)   Bile salts solubilize deposited cholesterol.
B)   Cholesterol is converted to bile salts that are later eliminated through feces.
C)   Both of these processes remove excess cholesterol from the body.
D)   None of these processes remove excess cholesterol from the body.E) C) and D)
F) A) and B)

Question 16

Which of the following is a characteristic of fatty acids?

Accepted Answer

A)   Most fatty acids have an odd number of carbon atoms.
B)   Trans isomers of unsaturated fatty acids are common.
C)   Unsaturated fatty acids have lower melting points than saturated fatty acids.
D)   None of these are a characteristic of fatty acids.E) B) and D)
F) None of the above

Question 17

Which of the following compounds is found in all types of complex lipids?

Accepted Answer

A)   a fatty acid
B)   glycerol
C)   a phosphate group
D)   all of theseE) B) and C)
F) None of the above

Question 18

Cell membranes are composed of _____.

Accepted Answer

A)   lipid bilayers
B)   protein bilayers
C)   lipid trilayers
D)   protein trilayersE) B) and D)
F) None of the above

Question 19

Which of the following unsaturated fatty acids has four double bonds?

Accepted Answer

A)   lauric acid
B)   myristic acid
C)   arachidonic acid
D)   palmitoleic acidE) A) and B)
F) B) and C)

Question 20

Which of the following statements is true of the calorific value of fats compared with that of carbohydrates?

Accepted Answer

A)   The burning of both fatsand carbohydrates produces about 4 kcal/g of energy.
B)   The burning of both fatsand carbohydrates produces about 9 kcal/g of energy.
C)   The burning of carbohydrates produces about 4 kcal/g, whereasthe burning of fatsproduces about 9 kcal/g of energy.
D)   The burning of carbohydrates produces about 9 kcal/g, whereas the burning of fats produces about 4 kcal/g of energy.E) None of the above
F) All of the above

Exam 20: Lipids

How do bile salts remove excess cholesterol from the body?

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Which of the following compounds is found in all types of complex lipids?

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Which of the following fatty acids is the least abundant in higher plants and animals?

Correct AnswerverifiedShow Answer

Which of the following statements is true of lipids?

Correct AnswerverifiedShow Answer

Which structural feature is associated with the prostaglandin E group (PGE) ?

Correct AnswerverifiedShow Answer

Which of the following physiological processes involves bile salts?

Correct AnswerverifiedShow Answer

In which of the following body structures are cerebrosides found?

Correct AnswerverifiedShow Answer

Which of the following lipoproteins transport cholesterol to the liver?

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Which of the following is found in thromboxanes?

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Which of the following is a characteristic of fatty acids?

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Which of the following lipoproteins carry the highest percentage (dry weight) of cholesterol?

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Which hormone triggers ovulation?

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To which class of compounds do waxes belong?

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Which of the following statements is true of the calorific value of fats compared with that of carbohydrates?

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Which of the following unsaturated fatty acids has four double bonds?

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Which of the following fatty acids has the lowest melting point?

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What is an essential fatty acid?

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Which type of transport does the sodium-potassium pump enable?

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Cell membranes are composed of _____.

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Which of the following compounds are exclusively found in glycolipids?

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