Question 1

Triacylglycerol A yields compound B when treated with excess H2, Pd-C. Ozonolysis of A affords three molecules of compound C and one molecule of compound D. What is the structure of A? 2, Pd-C. Ozonolysis of A affords three molecules of compound C and one molecule of compound D. What is the structure of A?   Choices for Triglycerol A:   A)  A B)  B C)  C D)  D" class="answers-bank-image d-inline" rel="preload" > Choices for Triglycerol A: 2, Pd-C. Ozonolysis of A affords three molecules of compound C and one molecule of compound D. What is the structure of A?   Choices for Triglycerol A:   A)  A B)  B C)  C D)  D" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 2

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 D)
F) A) and C)

Question 3

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

Accepted Answer

A)   oxygen
B)   hydrogen
C)   unsaturation
D)   aromatic ringsE) A) and C)
F) C) and D)

Question 4

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 5

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

Accepted Answer

A)   cyclohexane
B)   squalene
C)   triacyl glycerols
D)   arachadonic acidE) A) and C)
F) A) and D)

Question 6

All except one of the statements below are true about the molecule given. Which statement is not correct?

Accepted Answer

A)   This molecule is a phospholipid and is generally found in fruits, vegetables, fish, liver, and dairy products.
B)   This molecule is a phospholipid that composes the main fabric of the insoluble barrier that protects the cell.
C)   This molecule contains two fatty acids and has at least one stereogenic center.
D)   This molecule is a phospholipid and belongs to the general category of lecithins.E) A) and D)
F) B) and C)

Question 7

How many isoprene units are in the following molecule?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) A) and C)
F) A) and B)

Question 8

-Norethindrone is a synthetic steroid that is better than progesterone in suppressing ovulation. What reagents (1-3)  are required to convert norethindrone to the derivatives shown below? 2, Pd-C; (2)  (CH3) 2CHCH2NH2, NaBH3CN; (3)  a. O3, b. Zn, DMS B)  (1)  H2, Pd-C; (2)  (CH3) 2CHCH2NH2, mild acid; (3)  a. O3, b. Zn, DMS C)  (1)  a. LiAlH4, b. H2O; (2)  (CH3) 2CHCH2NH2, NaBH3CN; (3)  a. OsO4, b. NaHSO3 D)  (1)  a. LiAlH4, b. H2O; (2)  (CH3) 2CHCH2NH2, mild acid; (3)  a. OsO4, b. NaHSO3" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   (1)  H2, Pd-C; (2)  (CH3) 2CHCH2NH2, NaBH3CN; (3)  a. O3, b. Zn, DMS
B)   (1)  H2, Pd-C; (2)  (CH3) 2CHCH2NH2, mild acid; (3)  a. O3, b. Zn, DMS
C)   (1)  a. LiAlH4, b. H2O; (2)  (CH3) 2CHCH2NH2, NaBH3CN; (3)  a. OsO4, b. NaHSO3
D)   (1)  a. LiAlH4, b. H2O; (2)  (CH3) 2CHCH2NH2, mild acid; (3)  a. OsO4, b. NaHSO3E) None of the above
F) A) and B)

Question 9

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

Accepted Answer

A)   hydrogenation
B)   hydration
C)   ozonolysis
D)   hydrolysisE) B) and D)
F) A) and D)

Question 10

Which of the following are simple lipids?

Accepted Answer

A)   steroids
B)   terpenes
C)   waxes
D)   prostaglandinsE) B) and D)
F) A) and B)

Question 11

Which of the following compounds is not a hydrolyzable lipid?

Accepted Answer

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

Question 12

What is the main cellular function of a triacylglycerol?

Accepted Answer

A)   signal transduction
B)   form cell membranes
C)   nerve cell transferal
D)   energy storageE) A) and B)
F) A) and C)

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

Question 14

Solid fats are generally from what source?

Accepted Answer

A)   vegetables
B)   starches
C)   legumes
D)   animalsE) B) and D)
F) None of the above

Question 15

What is the first key enzyme required for the synthesis of prostaglandins from arachidonic acid?

Accepted Answer

A)   protein Kinase C
B)   synthase
C)   transferase
D)   COX (cyclic oxygenase) E) A) and B)
F) A) and C)

Question 16

What is (are)  the basic subunits of terpenes?

Accepted Answer

A)   cyclohexane
B)   triacyl glycerols
C)   isoprene
D)   carbonylsE) B) and D)
F) A) and B)

Question 17

What is the purpose of vitamin K?

Accepted Answer

A)   energy storage
B)   blood clotting
C)   photosynthesis
D)   hydrogenationE) A) and B)
F) None of the above

Question 18

Which of the following is a phospholipid?

Accepted Answer

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

Question 19

Which of the following correctly describes waxes?

Accepted Answer

A)   long chain alcohols
B)   long chain esters
C)   long chain ethers
D)   long chain fatty acidsE) C) and D)
F) A) and D)

Question 20

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

Accepted Answer

A)   palmitic acid
B)   arachidic acid
C)   stearic acid
D)   lauric acidE) A) and B)
F) A) and C)

Exam 30: Lipids

Which of the following are simple lipids?

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What is the main cellular function of a triacylglycerol?

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What is (are) the basic subunits of terpenes?

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

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

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All except one of the statements below are true about the molecule given. Which statement is not correct?

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Which of the following is a phospholipid?

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Which of the following correctly describes waxes?

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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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-Norethindrone is a synthetic steroid that is better than progesterone in suppressing ovulation. What reagents (1-3) are required to convert norethindrone to the derivatives shown below?

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

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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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Triacylglycerol A yields compound B when treated with excess H2, Pd-C. Ozonolysis of A affords three molecules of compound C and one molecule of compound D. What is the structure of A? Choices for Triglycerol A:

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What is the purpose of vitamin K?

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How many isoprene units are in the following molecule?

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What is the first key enzyme required for the synthesis of prostaglandins from arachidonic acid?

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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 compounds is not a hydrolyzable lipid?

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

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Triacylglycerol A yields compound B when treated with excess H₂, Pd-C. Ozonolysis of A affords three molecules of compound C and one molecule of compound D. What is the structure of A? Choices for Triglycerol A:

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