Question 1

Disulfide bonds in proteins can be reduced to free sulfhydryl groups by reagents such as _______________.

Accepted Answer

β-mecaptoethanol

Question 2

Where are Ω and β turns and loops often found?

Accepted Answer

A)  in a hydrophobic pocket 
B)  on the interior cleft 
C)  at the protein interface with ligand 
D)  on the surface of proteins 
E)  None of the above. 
A)  in a hydrophobic pocket 
B)  on the interior cleft 
C)  at the protein interface with ligand 
D)  on the surface of proteins 
E)  None of the above. D

Question 3

The folding of a protein into its native shape can best be described as:

Accepted Answer

A)  a random event. 
B)  a random event catalyzed by ribosome proteins to maintain a low energy structure. 
C)  a series of controlled folds with a few random-shaped structures. 
D)  a series of repeatable random events where the lowest energy structure is maintained. 
E)  an event where the highest possible energy state is stabilized with discrete folding intermediates. 
A)  a random event. 
B)  a random event catalyzed by ribosome proteins to maintain a low energy structure. 
C)  a series of controlled folds with a few random-shaped structures. 
D)  a series of repeatable random events where the lowest energy structure is maintained. 
E)  an event where the highest possible energy state is stabilized with discrete folding intermediates. D

Question 4

What is the advantage of protein interaction and assembly with other proteins?

Accepted Answer

When proteins interact or assemble, new

Question 5

The peptide bond is also known as a(n) _______________.

Accepted Answer

The answer of The peptide bond is also known as...

Question 6

A primary sequence of a protein contains a run of reasonably small amino acids, containing few branched amino acids or serines. This sequence ends in a proline. What can you deduce from this information?

Accepted Answer

The sequence is likely an alpha helix. T

Question 7

The configuration of most α-carbon atoms of amino acids linked in a peptide bond is:

Accepted Answer

A)  cis. 
B)  circular. 
C)  parallel. 
D)  trans. 
E)  perpendicular. 
A)  cis. 
B)  circular. 
C)  parallel. 
D)  trans. 
E)  perpendicular.

Question 8

Which of the following protein(s) contain examples of α-helical character?

Accepted Answer

A)  keratin 
B)  ferritin 
C)  myosin 
D)  tropomyosin 
E)  All of the above. 
A)  keratin 
B)  ferritin 
C)  myosin 
D)  tropomyosin 
E)  All of the above.

Question 9

_______________ is the major fibrous protein present in skin, bone, tendon, cartilage, and teeth.

Accepted Answer

The answer of _______________ is the major fibrous protein present...

Question 10

How does a protein's amino acid sequence influence the tertiary structure?

Accepted Answer

A protein will spontaneously f

Question 11

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-Changes in ____________ create amyloid fibers which are insoluble and are the source of mad cow disease, and Alzheimer's, and Parkinson's diseases.

Accepted Answer

A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine 
A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine

Question 12

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-According to convention, ____________ is the terminus drawn on the left side of a peptide.

Accepted Answer

A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine 
A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine

Question 13

What is the advantage of having certain regions of partially correct folded regions?

Accepted Answer

If some regions interact prefe

Question 14

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-The plot that allows one to investigate the likely orientation of certain amino acid pairs is called the ____________.

Accepted Answer

A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine 
A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine

Question 15

Peptides differ from proteins in _______________.

Accepted Answer

the number

Question 16

What are the key characterisics that make the peptide bond important to protein folding/structure?

Accepted Answer

The resonance of the amide bond create a

Question 17

Compact, globular proteins are typically water _______________ and consist mostly of _______________ secondary structure.

Accepted Answer

soluble; a

Question 18

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: Compact regions that may be connected by a flexible segment of polypeptide chain.

Accepted Answer

A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine 
A) amino 
B) water 
C) protons 
D) DNA 
E) secondary structure
F)tertiary structure
G)Ramachandran
H)RNA
I)domain
J)cystine
K)proline
L)Sanger
M)D amino acids
N)cysteine

Question 19

What is the "hydrophobic effect" as it relates to protein structure?

Accepted Answer

The three-dimensional structur

Question 20

The _______________ of a disulfide bridge results in a separation of two protein chains.

Accepted Answer

The answer of The _______________ of a disulfide bridge results...

Exam 4: Protein Three-Dimensional Structure

Disulfide bonds in proteins can be reduced to free sulfhydryl groups by reagents such as _______________.

Where are Ω and β turns and loops often found?

The folding of a protein into its native shape can best be described as:

What is the advantage of protein interaction and assembly with other proteins?

The peptide bond is also known as a(n) _______________.

A primary sequence of a protein contains a run of reasonably small amino acids, containing few branched amino acids or serines. This sequence ends in a proline. What can you deduce from this information?

The configuration of most α-carbon atoms of amino acids linked in a peptide bond is:

Which of the following protein(s) contain examples of α-helical character?

_______________ is the major fibrous protein present in skin, bone, tendon, cartilage, and teeth.

How does a protein's amino acid sequence influence the tertiary structure?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -Changes in ____________ create amyloid fibers which are insoluble and are the source of mad cow disease, and Alzheimer's, and Parkinson's diseases.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -According to convention, ____________ is the terminus drawn on the left side of a peptide.

What is the advantage of having certain regions of partially correct folded regions?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The plot that allows one to investigate the likely orientation of certain amino acid pairs is called the ____________.

Peptides differ from proteins in _______________.

What are the key characterisics that make the peptide bond important to protein folding/structure?

Compact, globular proteins are typically water _______________ and consist mostly of _______________ secondary structure.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -____________: Compact regions that may be connected by a flexible segment of polypeptide chain.

What is the "hydrophobic effect" as it relates to protein structure?

The _______________ of a disulfide bridge results in a separation of two protein chains.

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant Dna Techniques

Filters

Compact, globular proteins are typically water _ and consist mostly of _ secondary structure.