Question 1

Which of the following correctly describe(s) glyceryl trimyristate?

Accepted Answer

A)  an ester 
B)  a complex lipid 
C)  a triglyceride 
D)  a fat 
E)  all of the above 
A)  an ester 
B)  a complex lipid 
C)  a triglyceride 
D)  a fat 
E)  all of the above E

Question 2

Which of the following terms best describes the compound below?

Accepted Answer

A)  a lecithin 
B)  a diterpene 
C)  a steroid 
D)  a glyceride 
E)  a prostaglandin 
A)  a lecithin 
B)  a diterpene 
C)  a steroid 
D)  a glyceride 
E)  a prostaglandin E

Question 3

Prostaglandins are derived from ________.

Accepted Answer

A)  serine 
B)  hemoglobin 
C)  α-pinene 
D)  stearic acid 
E)  arachadonic acid 
A)  serine 
B)  hemoglobin 
C)  α-pinene 
D)  stearic acid 
E)  arachadonic acid E

Question 4

Which of the following oils has the highest percentage of saturated fatty acid?

Accepted Answer

A)  herring oil 
B)  olive oil 
C)  soybean oil 
D)  canola oil 
A)  herring oil 
B)  olive oil 
C)  soybean oil 
D)  canola oil

Question 5

The following paraminabeolide was isolated from a Formosan soft coral and has been found to have anti-inflammatory action (J. Nat. Prod. 2011, 1132). What is the lipid classification of paraminabeolide?

Accepted Answer

A)  terpene 
B)  triglyceride 
C)  steroid 
D)  prostaglandin 
A)  terpene 
B)  triglyceride 
C)  steroid 
D)  prostaglandin

Question 6

Why do soaps work poorly in acidic water?

Accepted Answer

Soap molecules are protonated

Question 7

Which of the following terms best describes the compound below? CH3(CH2)7CH=CH(CH2)7CO2H

Accepted Answer

A)  an unsaturated fatty acid 
B)  a triglyceride 
C)  a synthetic detergent 
D)  a micelle 
E)  isoprene 
A)  an unsaturated fatty acid 
B)  a triglyceride 
C)  a synthetic detergent 
D)  a micelle 
E)  isoprene

Question 8

Why and in what fashion does the presence of a double bond in a fatty acid affect its melting point relative to the system where the double bond is absent?

Accepted Answer

The presence of a double bond

Question 9

Which of the following peaks would one expect to observe as a major, strong peak in the IR spectrum of a lipid wax?

Accepted Answer

A)  3200-3500 cm-1 
B)  2710 cm-1 
C)  2200 cm-1 
D)  1730 cm-1 
E)  1620 cm-1 
A)  3200-3500 cm-1 
B)  2710 cm-1 
C)  2200 cm-1 
D)  1730 cm-1 
E)  1620 cm-1

Question 10

Which of the following terms best describes the compound below? CH3(CH2)12CO2H

Accepted Answer

A)  a triglyceride 
B)  a fatty acid 
C)  a wax 
D)  a prostaglandin 
E)  a phosphatidic acid 
A)  a triglyceride 
B)  a fatty acid 
C)  a wax 
D)  a prostaglandin 
E)  a phosphatidic acid

Question 11

Lauric acid has the formula CH3(CH2)10CO2H. Provide the structure of the triglyceride which was formed from three equivalents of lauric acid.

Accepted Answer

Question 12

Provide the major organic product of the following reaction sequence.

Accepted Answer

The answer of Provide the major organic product of the...

Question 13

Provide the major organic product of the following reaction.

Accepted Answer

The answer of Provide the major organic product of the...

Question 14

Which of the following lipids is an example of a simple lipid?

Accepted Answer

A)  fat 
B)  terpene 
C)  oil 
D)  wax 
E)  none of the above 
A)  fat 
B)  terpene 
C)  oil 
D)  wax 
E)  none of the above

Question 15

What reagent is needed to convert CH3(CH2)14CH2OH to CH3(CH2)14CHO?

Accepted Answer

PCC (pyrid

Question 16

Which of the following terms best describes the compound below?

Accepted Answer

A)  a sesquiterpene 
B)  a steroid 
C)  a protein 
D)  a cephalin 
E)  an essential oil 
A)  a sesquiterpene 
B)  a steroid 
C)  a protein 
D)  a cephalin 
E)  an essential oil

Question 17

Which of the following is a complex lipid?

Accepted Answer

A)  testosterone 
B)  tristearin 
C)  arachidic acid 
D)  sodium palmitate 
E)  b-carotene 
A)  testosterone 
B)  tristearin 
C)  arachidic acid 
D)  sodium palmitate 
E)  b-carotene

Question 18

Provide a sketch of a lipid bilayer. Label the hydrophobic and hydrophilic regions.

Accepted Answer

The answer of Provide a sketch of a lipid bilayer....

Question 19

What reagents would you use to prepare octadecanal from stearic acid, CH3(CH2)16CO2H?

Accepted Answer

1. LiAlH₄ 2

Question 20

How many hydrocarbon tails are typically present in a phospholipid molecule?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Exam 25: Lipids

Which of the following correctly describe(s) glyceryl trimyristate?

Which of the following terms best describes the compound below?

Prostaglandins are derived from ________.

Which of the following oils has the highest percentage of saturated fatty acid?

The following paraminabeolide was isolated from a Formosan soft coral and has been found to have anti-inflammatory action (J. Nat. Prod. 2011, 1132). What is the lipid classification of paraminabeolide?

Why do soaps work poorly in acidic water?

Which of the following terms best describes the compound below? CH3(CH2)7CH=CH(CH2)7CO2H

Why and in what fashion does the presence of a double bond in a fatty acid affect its melting point relative to the system where the double bond is absent?

Which of the following peaks would one expect to observe as a major, strong peak in the IR spectrum of a lipid wax?

Which of the following terms best describes the compound below? CH3(CH2)12CO2H

Lauric acid has the formula CH3(CH2)10CO2H. Provide the structure of the triglyceride which was formed from three equivalents of lauric acid.

Provide the major organic product of the following reaction sequence.

Provide the major organic product of the following reaction.

Which of the following lipids is an example of a simple lipid?

What reagent is needed to convert CH3(CH2)14CH2OH to CH3(CH2)14CHO?

Which of the following terms best describes the compound below?

Which of the following is a complex lipid?

Provide a sketch of a lipid bilayer. Label the hydrophobic and hydrophilic regions.

What reagents would you use to prepare octadecanal from stearic acid, CH3(CH2)16CO2H?

How many hydrocarbon tails are typically present in a phospholipid molecule?

Introduction and Review

Structure and Properties of Organic Molecules

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Alkynes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Synthetic Polymers

Filters

Which of the following terms best describes the compound below? CH₃(CH₂)₇CH=CH(CH₂)₇CO₂H

Which of the following terms best describes the compound below? CH₃(CH₂)₁₂CO₂H

Lauric acid has the formula CH₃(CH₂)₁₀CO₂H. Provide the structure of the triglyceride which was formed from three equivalents of lauric acid.

What reagent is needed to convert CH₃(CH₂)₁₄CH₂OH to CH₃(CH₂)₁₄CHO?

What reagents would you use to prepare octadecanal from stearic acid, CH₃(CH₂)₁₆CO₂H?