Question 1

Which type of phosphatide has the structural unit:

Accepted Answer

A) Cephalins 
B) Phosphatidyl serines 
C) Plasmalogens 
D) Lecithins 
E) Both cephalins and plasmalogens 
A) Cephalins 
B) Phosphatidyl serines 
C) Plasmalogens 
D) Lecithins 
E) Both cephalins and plasmalogens

Question 2

Which fatty acid is responsible for the putrid odor of rancid butter?

Accepted Answer

A) Valeric acid 
B) Myristic acid 
C) Stearic acid 
D) Oleic acid 
E) Butyric acid 
A) Valeric acid 
B) Myristic acid 
C) Stearic acid 
D) Oleic acid 
E) Butyric acid

Question 3

Which reagent might be used to convert 5$\infty$-cholest-1-en-3-ol into 5$\infty$-cholestan-3-ol?

Accepted Answer

A) CrO3/pyridine 
B) KMnO4/H2O 
C) CH3MgI 
D) H2/Pt 
E) Li/C2H5NH2 
A) CrO3/pyridine 
B) KMnO4/H2O 
C) CH3MgI 
D) H2/Pt 
E) Li/C2H5NH2

Question 4

One of the intermediates in a prostaglandin synthesis is shown below.  
 Which reaction might be employed to make this molecule from 1,1-dimethoxy-3-nitropropane and an appropriate $\alpha\beta$-unsaturated aldehyde? Show the structural details of the reagents as well as any catalysts that might be needed.

Accepted Answer

Deprotonation with base of the active hy

Question 5

Unsaturated fatty acids have a bend in the carbon chain that interferes with packing.Therefore the corresponding triacylglycerols are generally ___ at room temperature and are called ___.

Accepted Answer

The answer of Unsaturated fatty acids have a bend in...

Question 6

Choline cannot be found as a product of hydrolysis of any representative of this class of lipids.

Accepted Answer

A) Sphingomyelins 
B) Lecithins 
C) Plasmalogens 
D) Waxes 
E) Both plasmalogens and waxes 
A) Sphingomyelins 
B) Lecithins 
C) Plasmalogens 
D) Waxes 
E) Both plasmalogens and waxes

Question 7

Which of the following would serve as the basis for a simple chemical test that would distinguish between stearic acid and oleic acid?

Accepted Answer

A) NaOH/H2O 
B) NaHCO3/H2O 
C) HCl/H2O 
D) Ag(NH3)2+ 
E) Br2/CCl4 
A) NaOH/H2O 
B) NaHCO3/H2O 
C) HCl/H2O 
D) Ag(NH3)2+ 
E) Br2/CCl4

Which type of phosphatide has the structural unit:

Which fatty acid is responsible for the putrid odor of rancid butter?

Which reagent might be used to convert 5 $\infty$ -cholest-1-en-3-ol into 5 $\infty$ -cholestan-3-ol?

Unsaturated fatty acids have a bend in the carbon chain that interferes with packing.Therefore the corresponding triacylglycerols are generally _ at room temperature and are called _.

Choline cannot be found as a product of hydrolysis of any representative of this class of lipids.

Which of the following would serve as the basis for a simple chemical test that would distinguish between stearic acid and oleic acid?

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Exam 23: Lipids

Which type of phosphatide has the structural unit:

Which fatty acid is responsible for the putrid odor of rancid butter?

Which reagent might be used to convert 5 ∞\infty∞ -cholest-1-en-3-ol into 5 ∞\infty∞ -cholestan-3-ol?

Unsaturated fatty acids have a bend in the carbon chain that interferes with packing.Therefore the corresponding triacylglycerols are generally ___ at room temperature and are called ___.

Choline cannot be found as a product of hydrolysis of any representative of this class of lipids.

Which of the following would serve as the basis for a simple chemical test that would distinguish between stearic acid and oleic acid?

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which reagent might be used to convert 5 $\infty$ -cholest-1-en-3-ol into 5 $\infty$ -cholestan-3-ol?

Unsaturated fatty acids have a bend in the carbon chain that interferes with packing.Therefore the corresponding triacylglycerols are generally _ at room temperature and are called _.