Question 1

What is the single-letter abbreviation for tyrosine?

Accepted Answer

A) V 
B) W 
C) R 
D) Y 
E) Q 
A) V 
B) W 
C) R 
D) Y 
E) Q

Question 2

What is the pI of glycine? The structure and pKa values are shown below.

Accepted Answer

A) 7)26 
B) 5)97 
C) 3)63 
D) 7)50 
E) 11.94 
A) 7)26 
B) 5)97 
C) 3)63 
D) 7)50 
E) 11.94

Question 3

Explain the chemistry behind giving a "permanent" to a head of hair.

Accepted Answer

A permanent alters the shape of hair by

Question 4

Give the product for the following reaction.

Accepted Answer

The answer of Give the product for the following reaction....

Question 5

Name the peptide.

Accepted Answer

A) ser-cys-phe-gly 
B) ser-cys-tyr-gly 
C) ala-val-leu-gln 
D) phe-ala-val-leu 
E) ala-gly-phe-val 
A) ser-cys-phe-gly 
B) ser-cys-tyr-gly 
C) ala-val-leu-gln 
D) phe-ala-val-leu 
E) ala-gly-phe-val

Question 6

What is the single-letter abbreviation for glutamate?

Accepted Answer

A) E 
B) W 
C) R 
D) Y 
E) Q 
A) E 
B) W 
C) R 
D) Y 
E) Q

Question 7

Draw the predominant form of proline at pH=12.

Accepted Answer

The answer of Draw the predominant form of proline at...

Question 8

Provide the major organic product(s)of the reaction below.

Accepted Answer

The answer of Provide the major organic product(s)of the reaction...

Question 9

Provide the structure of Thr-Gln-Met at pH 7.0.

Accepted Answer

The answer of Provide the structure of Thr-Gln-Met at pH...

Question 10

Draw vertical lines through the peptide bonds in the decapeptide below that will be cleaved by cyanogen bromide.
Try-Ser-Ala-Met-Ser-Pro-Met-Gly-Gly-Asp

Accepted Answer

The answer of Draw vertical lines through the peptide bonds...

Question 11

What is the product obtained from the mild oxidation of the thiol shown below?

Accepted Answer

A) R-S-R 
B) R-OH 
C) R-S-S-R 
D) R-OO-R 
E) R-S-OH 
A) R-S-R 
B) R-OH 
C) R-S-S-R 
D) R-OO-R 
E) R-S-OH

Question 12

Draw a line where cleavage occurs with chymotrypsin.

Accepted Answer

The answer of Draw a line where cleavage occurs with...

Question 13

The conversion of a disulfide to thiols represents a(n)

Accepted Answer

A) oxidation. 
B) reduction. 
C) elimination. 
D) substitution. 
E) tautomerization. 
A) oxidation. 
B) reduction. 
C) elimination. 
D) substitution. 
E) tautomerization.

Question 14

Describe how electrophoresis works.

Accepted Answer

A sample of an amino acid mixture is pla

Question 15

Provide the structure of the tripeptide glu-ser-ala at pH 12.

Accepted Answer

The answer of Provide the structure of the tripeptide glu-ser-ala...

Question 16

Draw the predominant form of aspartate at physiological pH.

Accepted Answer

The answer of Draw the predominant form of aspartate at...

Question 17

Which of the following amino acids has a heterocyclic R group?

Accepted Answer

A) glycine 
B) threonine 
C) proline 
D) aspartic acid 
E) arginine 
A) glycine 
B) threonine 
C) proline 
D) aspartic acid 
E) arginine

Exam 21: Amino Acids,peptides,and Proteins

What is the single-letter abbreviation for tyrosine?

What is the pI of glycine? The structure and pKa values are shown below.

Explain the chemistry behind giving a "permanent" to a head of hair.

Give the product for the following reaction.

Name the peptide.

What is the single-letter abbreviation for glutamate?

Draw the predominant form of proline at pH=12.

Provide the major organic product(s)of the reaction below.

Provide the structure of Thr-Gln-Met at pH 7.0.

Draw vertical lines through the peptide bonds in the decapeptide below that will be cleaved by cyanogen bromide. Try-Ser-Ala-Met-Ser-Pro-Met-Gly-Gly-Asp

What is the product obtained from the mild oxidation of the thiol shown below?

Draw a line where cleavage occurs with chymotrypsin.

The conversion of a disulfide to thiols represents a(n)

Describe how electrophoresis works.

Provide the structure of the tripeptide glu-ser-ala at pH 12.

Draw the predominant form of aspartate at physiological pH.

Which of the following amino acids has a heterocyclic R group?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters