Question 1

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. 
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.

Question 2

What is the main cellular function of a triacylglycerol?

Accepted Answer

A)  signal transduction 
B)  form cell membranes 
C)  nerve cell transferal 
D)  energy storage 
A)  signal transduction 
B)  form cell membranes 
C)  nerve cell transferal 
D)  energy storage

Question 3

Which of the following is a phospholipid?

Accepted Answer

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

Question 4

Which of the following are simple lipids?

Accepted Answer

A)  steroids 
B)  terpenes 
C)  waxes 
D)  prostaglandins 
A)  steroids 
B)  terpenes 
C)  waxes 
D)  prostaglandins

Question 5

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

Question 6

Solid fats are generally from what source?

Accepted Answer

A)  vegetables 
B)  starches 
C)  legumes 
D)  animals 
A)  vegetables 
B)  starches 
C)  legumes 
D)  animals

Question 7

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

Accepted Answer

A)  palmitic acid 
B)  arachidic acid 
C)  stearic acid 
D)  lauric acid 
A)  palmitic acid 
B)  arachidic acid 
C)  stearic acid 
D)  lauric acid

Question 8

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

Question 9

Which of the following compounds is not a hydrolyzable lipid?

Accepted Answer

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

Question 10

How many isoprene units are in the following molecule?

Accepted Answer

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

Question 11

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:

Accepted Answer

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

Question 12

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. 
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.

Question 13

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 acid 
A)  cyclohexane 
B)  squalene 
C)  triacyl glycerols 
D)  arachadonic acid

Question 14

-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?

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. NaHSO3 
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. NaHSO3

Question 15

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

Accepted Answer

A)  hydrogenation 
B)  hydration 
C)  ozonolysis 
D)  hydrolysis 
A)  hydrogenation 
B)  hydration 
C)  ozonolysis 
D)  hydrolysis

Question 16

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

Accepted Answer

A)  oxygen 
B)  hydrogen 
C)  unsaturation 
D)  aromatic rings 
A)  oxygen 
B)  hydrogen 
C)  unsaturation 
D)  aromatic rings

Question 17

What is (are) the basic subunits of terpenes?

Accepted Answer

A)  cyclohexane 
B)  triacyl glycerols 
C)  isoprene 
D)  carbonyls 
A)  cyclohexane 
B)  triacyl glycerols 
C)  isoprene 
D)  carbonyls

Question 18

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

Accepted Answer

A)  monoterpene 
B)  diterpene 
C)  triterpene 
D)  sesquiterpene 
A)  monoterpene 
B)  diterpene 
C)  triterpene 
D)  sesquiterpene

Question 19

What is the purpose of vitamin K?

Accepted Answer

A)  energy storage 
B)  blood clotting 
C)  photosynthesis 
D)  hydrogenation 
A)  energy storage 
B)  blood clotting 
C)  photosynthesis 
D)  hydrogenation

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 acid 
A)  palmitic acid 
B)  arachidic acid 
C)  stearic acid 
D)  lauric acid

Exam 30: Lipids

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

What is the main cellular function of a triacylglycerol?

Which of the following is a phospholipid?

Which of the following are simple lipids?

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

Solid fats are generally from what source?

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

Which of the following correctly describes waxes?

Which of the following compounds is not a hydrolyzable lipid?

How many isoprene units are in the following molecule?

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:

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

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

-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?

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

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

What is (are) the basic subunits of terpenes?

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

What is the purpose of vitamin K?

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

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers and Epoxides

Alkenes

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Electrophilic Aromatic Substitution

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones Nucleophilic Addition

Carboxylic Acids and Derivatives

Substitution Reactions of Carbonyl Compounds at the Alpha-Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Filters

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: