Question 1

Which of the following correctly describes a peptide bond?

Accepted Answer

A) a bond between sp3-hybridized atoms only 
B) a bond usually found in the s-cis conformation 
C) an amide bond 
D) the result of the formation of the carbonyl group of one amino acid with a R-group from the other amino acid 
A) a bond between sp3-hybridized atoms only 
B) a bond usually found in the s-cis conformation 
C) an amide bond 
D) the result of the formation of the carbonyl group of one amino acid with a R-group from the other amino acid

Question 2

Below is a proposed method for resolving a racemic mixture of (R)- and (S)-phenylalanine.Upon separation of the products,will this method produce (R)- or (S)-phenylalanine?

Accepted Answer

A) (R)-Phenylalanine is produced since the acylase only hydrolyzes the amides of L-amino acids. 
B) (S)-Phenylalanine is produced since the acylase only hydrolyzes the amides of L-amino acids. 
C) (R)-Phenylalanine is produced since the acylase only hydrolyzes the amides of D-amino acids. 
D) (S)-Phenylalanine is produced since the acylase only hydrolyzes the amides of D-amino acids. 
A) (R)-Phenylalanine is produced since the acylase only hydrolyzes the amides of L-amino acids. 
B) (S)-Phenylalanine is produced since the acylase only hydrolyzes the amides of L-amino acids. 
C) (R)-Phenylalanine is produced since the acylase only hydrolyzes the amides of D-amino acids. 
D) (S)-Phenylalanine is produced since the acylase only hydrolyzes the amides of D-amino acids.

Question 3

What is the product of the following reaction? (Assume workup to neutralize.)

Accepted Answer

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

Question 4

What is the product of the following reaction? (Assume workup to neutralize.)

Accepted Answer

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

Question 5

Which is the correct structure for the amino acid proline?

Accepted Answer

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

Question 6

What amino acid is at the C-terminus of the following peptide?

Accepted Answer

A) Valine 
B) Serine 
C) Alanine 
D) Proline 
A) Valine 
B) Serine 
C) Alanine 
D) Proline

Which of the following correctly describes a peptide bond?

Below is a proposed method for resolving a racemic mixture of (R)- and (S)-phenylalanine.Upon separation of the products,will this method produce (R)- or (S)-phenylalanine?

What is the product of the following reaction? (Assume workup to neutralize.)

What is the product of the following reaction? (Assume workup to neutralize.)

Which is the correct structure for the amino acid proline?

What amino acid is at the C-terminus of the following peptide?

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 Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Synthetic Polymers

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

Filters

Exam 27: Amino Acids and Proteins

Which of the following correctly describes a peptide bond?

Below is a proposed method for resolving a racemic mixture of (R)- and (S)-phenylalanine.Upon separation of the products,will this method produce (R)- or (S)-phenylalanine?

What is the product of the following reaction? (Assume workup to neutralize.)

What is the product of the following reaction? (Assume workup to neutralize.)

Which is the correct structure for the amino acid proline?

What amino acid is at the C-terminus of the following peptide?

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 Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Synthetic Polymers

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

Filters