Question 1

Which of the following is a fat soluble vitamin?

Accepted Answer

A)  Vitamin A
B)  Vitamin D3
C)  Vitamin K
D)  All of these choices are correctE) B) and D)
F) B) and C)

Question 2

What happens to the melting point in fatty acids as the unsaturation increases?

Accepted Answer

A)  It increases
B)  It decreases.
C)  There is no direct correlation between unsaturation and melting point.
D)  The melting point stays the same.E) None of the above
F) A) and B)

Question 3

What is the result of the oxidation of arachidonic acid with O2 by cyclooxygenase?

Accepted Answer

A)  It results in the synthesis of prostaglandins,thromboxanes,and prostacyclins.
B)  It results in the synthesis of fat-soluble vitamins from sphingomyelins.
C)  It results in the synthesis of phosphoacylglycerols.
D)  It is an important step in the synthesis of lipids that form the lipid bilayer.E) All of the above
F) None of the above

Question 4

Evaluate the following statement: The terpene structure shown is a hydrolysable lipid.

Accepted Answer

A)  True,because it contains an alcohol functional group.
B)  False,because alcohol and aldehyde moieties are not hydrolysable.
C)  True,because there are three polar groups and only 12 total carbon atoms.
D)  False,because there is too much steric repulsion from the alcohol and aldehyde moieties.E) All of the above
F) A) and B)

Question 5

Which of the following fatty acids is not present in natural fats and oils?

Accepted Answer

A)  Hexadecanoic acid
B)  Heptadecanoic acid
C)  Octadecanoic acid
D)  None of the choicesE) None of the above
F) A) and D)

Question 6

Which of the following compounds is a steroid?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) All of the above
F) A) and C)

Question 7

Which of the following compounds is not a lipid?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) A) and D)
F) A) and C)

Question 8

Patchouli alcohol is an example of a terpene.How is this molecule classified?

Accepted Answer

A)  Monoterpene
B)  Diterpene
C)  Triterpene
D)  SesquiterpeneE) A) and B)
F) A) and D)

Question 9

Which of the following is not one of the three main categories of hydrolyzable lipids?

Accepted Answer

A)  Waxes
B)  Steroids
C)  Triacylglycerols
D)  PhospholipidsE) B) and D)
F) C) and D)

Question 10

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

Accepted Answer

A)  Palmitic acid
B)  Arachidic acid
C)  Stearic acid
D)  Lauric acidE) A) and B)
F) All of the above

Question 11

Solid fats are generally from what source?

Accepted Answer

A)  Vegetables
B)  Starches
C)  Legumes
D)  AnimalsE) None of the above
F) A) and B)

Question 12

Which of the following are simple lipids?

Accepted Answer

A)  Steroids
B)  Terpenes
C)  Waxes
D)  ProstaglandinsE) C) and D)
F) A) and B)

Question 13

From the statements below,pick out the one that is not correct for fat-soluble vitamins.

Accepted Answer

A)  Fat-soluble vitamins are classified as lipids.
B)  Fat-soluble vitamins are a group of biologically active compounds containing 20 carbon atoms.
C)  Fat-soluble vitamins are required in small quantities for normal metabolism.
D)  Fat-soluble vitamins are stored in fat cells for use when they are needed.E) A) and B)
F) A) and C)

Question 14

Sphingomyelins are a major component of the myelin sheath.Damage to the myelin sheath results in such diseases as multiple sclerosis.Which compound below corresponds to a sphingomyelin?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) None of the above
F) A) and B)

Question 15

What is the purpose of vitamin K?

Accepted Answer

A)  Energy storage
B)  Blood clotting
C)  Photosynthesis
D)  HydrogenationE) A) and C)
F) B) and D)

Question 16

Which of the following compounds is not a hydrolyzable lipid?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) A) and B)
F) B) and D)

Question 17

What is the name of the reaction of triglycerides with a base?

Accepted Answer

A)  Esterification
B)  Transesterification
C)  Ozonolysis
D)  SaponificationE) A) and B)
F) A) and C)

Question 18

How many isoprene units are in the following molecule?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) A) and B)
F) All of the above

Question 19

How can an unsaturated fatty acid be converted into a saturated fatty acid?

Accepted Answer

A)  Hydrogenation
B)  Hydration
C)  Ozonolysis
D)  HydrolysisE) C) and D)
F) B) and C)

Question 20

What is (are) the biological precursor(s) for the formation of the steroid skeleton found in cholesterol?

Accepted Answer

A)  Cyclohexane
B)  Squalene
C)  Triacylglycerols
D)  Arachadonic acidE) B) and C)
F) B) and D)

Exam 29: Lipids

Which of the following compounds is a steroid?

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Evaluate the following statement: The terpene structure shown is a hydrolysable lipid.

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How many isoprene units are in the following molecule?

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Which of the following fatty acids is not present in natural fats and oils?

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From the statements below,pick out the one that is not correct for fat-soluble vitamins.

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Solid fats are generally from what source?

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How can an unsaturated fatty acid be converted into a saturated fatty acid?

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What is the purpose of vitamin K?

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

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Sphingomyelins are a major component of the myelin sheath.Damage to the myelin sheath results in such diseases as multiple sclerosis.Which compound below corresponds to a sphingomyelin?

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Which of the following compounds is not a hydrolyzable lipid?

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What is (are) the biological precursor(s) for the formation of the steroid skeleton found in cholesterol?

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What happens to the melting point in fatty acids as the unsaturation increases?

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Which of the following compounds is not a lipid?

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Which of the following are simple lipids?

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Which of the following is a fat soluble vitamin?

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Patchouli alcohol is an example of a terpene.How is this molecule classified?

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Which of the following is not one of the three main categories of hydrolyzable lipids?

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What is the result of the oxidation of arachidonic acid with O2 by cyclooxygenase?

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What is the name of the reaction of triglycerides with a base?

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What is the result of the oxidation of arachidonic acid with O₂ by cyclooxygenase?

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