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


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) None of the above
F) A) and B)

Correct Answer

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Which of the following correctly describes waxes?


A) Long chain alcohols
B) Long chain esters
C) Long chain ethers
D) Long chain fatty acids

E) B) and C)
F) None of the above

Correct Answer

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B

Which of the following compounds is a steroid? Which of the following compounds is a steroid? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

E) A) and B)
F) B) and D)

Correct Answer

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What is the purpose of vitamin K?


A) Energy storage
B) Blood clotting
C) Photosynthesis
D) Hydrogenation

E) B) and C)
F) None of the above

Correct Answer

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Which of the following classes of molecules is not a nonhydrolyzable lipid?


A) Steroids
B) Terpenes
C) Phospholipids
D) Eicosanoids

E) C) and D)
F) B) and C)

Correct Answer

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


A) Palmitic acid
B) Arachidic acid
C) Stearic acid
D) Lauric acid

E) C) and D)
F) All of the above

Correct Answer

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Which of the following are complex lipids?


A) Steroids
B) Terpenes
C) Waxes
D) Protaglandins

E) A) and D)
F) B) and C)

Correct Answer

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Provide a definition of the term lipid.


A) A compound with a carbonyl group
B) A compound with an aromatic ring
C) A hydrophobic biomolecule
D) A water-soluble compound

E) C) and D)
F) None of the above

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C

The stereoselective introduction of the C15 OH group on the w side chain of prostaglandins has presented a challenge for synthetic chemists.Recently, Mulzer and co-workers demonstrated a new route in which the wside chain is synthesized independently and then attached to the bicyclic counterpart.What is the appropriate sequence of reagents for the following synthesis? <sup> </sup>The stereoselective introduction of the C15 OH group on the w side chain of prostaglandins has presented a challenge for synthetic chemists.Recently, Mulzer and co-workers demonstrated a new route in which the wside chain is synthesized independently and then attached to the bicyclic counterpart.What is the appropriate sequence of reagents for the following synthesis? A) (1) PBr<sub>3</sub>; (2) Grubbs' catalyst, Reagent X; (3) KOC(CH<sub>3</sub>) <sub>3</sub> B) (1) PCC; (2) Ph<sub>3</sub>P=CH<sub>2</sub>; (3) Grubbs' catalyst, Reagent X C) (1) PBr<sub>3</sub>; (2) Ph<sub>3</sub>P=CH<sub>2</sub>; (3) Grubbs' catalyst, Reagent X D) (1) TsCl, pyridine; (2) Grubbs' catalyst, Reagent X; (3) KOC(CH<sub>3</sub>) <sub>3</sub>


A) (1) PBr3; (2) Grubbs' catalyst, Reagent X; (3) KOC(CH3) 3
B) (1) PCC; (2) Ph3P=CH2; (3) Grubbs' catalyst, Reagent X
C) (1) PBr3; (2) Ph3P=CH2; (3) Grubbs' catalyst, Reagent X
D) (1) TsCl, pyridine; (2) Grubbs' catalyst, Reagent X; (3) KOC(CH3) 3

E) None of the above
F) All of the above

Correct Answer

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How many isoprene units are in the following molecule? How many isoprene units are in the following molecule? A) 1 B) 2 C) 3 D) 4


A) 1
B) 2
C) 3
D) 4

E) C) and D)
F) All of the above

Correct Answer

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


A) Cyclohexane
B) Squalene
C) Triacylglycerols
D) Arachadonic acid

E) C) and D)
F) None of the above

Correct Answer

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How many isoprene units can be found in the following compound? How many isoprene units can be found in the following compound? A) 1 B) 4 C) 8 D) 9


A) 1
B) 4
C) 8
D) 9

E) None of the above
F) B) and C)

Correct Answer

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Liquid oils usually have a higher percentage of what component compared to solid fats?


A) Oxygen
B) Hydrogen
C) Unsaturation
D) Aromatic rings

E) B) and C)
F) A) and D)

Correct Answer

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


A) Linoleic acid
B) Oleic acid
C) Arachidonic acid
D) Palmitoleic acid

E) C) and D)
F) B) and D)

Correct Answer

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Which of the following compounds is not a lipid? Which of the following compounds is not a lipid? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

E) B) and C)
F) A) and B)

Correct Answer

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What is the structure of a cortisone derivative that has a C=C between C6 and C7, methyl group at C8 and chlorine at C12? The configuration of C8 is S and the configuration at C12 is R. What is the structure of a cortisone derivative that has a C=C between C6 and C7, methyl group at C8 and chlorine at C12? The configuration of C8 is S and the configuration at C12 is R. A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and D)
F) B) and C)

Correct Answer

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


A) Palmitic acid
B) Arachidic acid
C) Stearic acid
D) Lauric acid

E) All of the above
F) A) and D)

Correct Answer

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What is the main cellular function of a triacylglycerol?


A) Signal transduction
B) Form cell membranes
C) Nerve cell transferal
D) Energy storage

E) C) and D)
F) B) and D)

Correct Answer

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D

Which of the following sequences shows a reasonable series of 1,2-rearrangements as might be found in the biosynthesis of a steroid? <sup> </sup>Which of the following sequences shows a reasonable series of 1,2-rearrangements as might be found in the biosynthesis of a steroid? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

E) A) and B)
F) C) and D)

Correct Answer

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Which of the following compounds is not a hydrolyzable lipid? Which of the following compounds is not a hydrolyzable lipid? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

E) A) and B)
F) A) and C)

Correct Answer

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