Question 1

What are the three aromatic amino acids?

Accepted Answer

Phenylalanine, tyrosine, and tryptophan

Question 2

Serine, threonine and tyrosine all have what in common?

Accepted Answer

Each has a hydroxyl (-OH) group, which makes the first two amino acids more water soluble and increases the reactivity of all three amino acids.

Question 3

Which amino acid is responsible for stabilizing the stucture of a protein by forming pairs of sulfhydryl groups?

Accepted Answer

Cysteine

Question 4

What functions make histadine an important amino acid?

Accepted Answer

The pKa of the imidazole ring is near ph

Question 5

A gene is mutated such that the amino acids glycine and glutamate are now alanine and leucine, respectively.What are the potential results of each of these mutations? Assume that the mutations are not near each other in the primary sequence and have no impact on the other.

Accepted Answer

The glycine-to-alanine mutations are sim

Question 6

Even though malnourished, children with Kwashiorkor display a distended stomach, giving the illusion of being full. Why does this happen?

Accepted Answer

This is a nutritional state where there

Question 7

Name three amino acids that are positively charged at a neutral pH.

Accepted Answer

A)  lysine and arginine 
B)  histidine and arginine 
C)  cysteine and arginine 
D)  lysine and proline 
E)  glutamine and histidine 
A)  lysine and arginine 
B)  histidine and arginine 
C)  cysteine and arginine 
D)  lysine and proline 
E)  glutamine and histidine

Question 8

What are the four ways amino acids can be classified?

Accepted Answer

Hydrophobic, polar,

Question 9

The amino acid with the smallest-size side chain allowing greatest flexibility in a protein is __________.

Accepted Answer

The answer of The amino acid with the smallest-size side...

Question 10

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: The amino acid with a sulfhydryl side chain.

Accepted Answer

A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids 
A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids

Question 11

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

Accepted Answer

When proteins interact or asse

Question 12

Which amino acid has a side chain with a hydroxyl group?

Accepted Answer

A)  serine 
B)  alanine 
C)  tryptophan 
D)  histidine 
E)  glutamine 
A)  serine 
B)  alanine 
C)  tryptophan 
D)  histidine 
E)  glutamine

Question 13

Why is the central carbon on an amino acid so important?

Accepted Answer

This is the chiral center of t

Question 14

What charged group(s) is/are present in glycine at a pH of 7?

Accepted Answer

A)  -NH3+ 
B)  -COO- 
C)  -NH2+ 
D)  A and B 
E)  A, B, and C 
A)  -NH3+ 
B)  -COO- 
C)  -NH2+ 
D)  A and B 
E)  A, B, and C

Question 15

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: Chiral type of amino acids found in proteins.

Accepted Answer

A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids 
A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids

Question 16

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: The amino acid with an imidazole side chain.

Accepted Answer

A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids 
A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids

Question 17

Draw the general structure of an amino acid at pH 7.0 with the side group shown as an "R."

Accepted Answer

The figure should lo

Question 18

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: The amino acid with a negatively charged side chain at neutral pH.

Accepted Answer

A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids 
A) L amino acids 
B) water 
C) protons 
D) zwitterions 
E) leucine
F)serine
G)tyrosine
H)cysteine
I)glutamate
J)histidine
K)proline
L)asparagine
M)D amino acids

Question 19

Draw the structure of alanine, aspartic acid, and histidine when the pH is 1.0, 7.0, and 12.0.

Accepted Answer

Use the figures in your book a

Question 20

The amino acid with an indol ring is __________.

Accepted Answer

The answer of The amino acid with an indol ring...

Exam 3: Amino Acids

What are the three aromatic amino acids?

Serine, threonine and tyrosine all have what in common?

Which amino acid is responsible for stabilizing the stucture of a protein by forming pairs of sulfhydryl groups?

What functions make histadine an important amino acid?

A gene is mutated such that the amino acids glycine and glutamate are now alanine and leucine, respectively.What are the potential results of each of these mutations? Assume that the mutations are not near each other in the primary sequence and have no impact on the other.

Even though malnourished, children with Kwashiorkor display a distended stomach, giving the illusion of being full. Why does this happen?

Name three amino acids that are positively charged at a neutral pH.

What are the four ways amino acids can be classified?

The amino acid with the smallest-size side chain allowing greatest flexibility in a protein is __________.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -____________: The amino acid with a sulfhydryl side chain.

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

Which amino acid has a side chain with a hydroxyl group?

Why is the central carbon on an amino acid so important?

What charged group(s) is/are present in glycine at a pH of 7?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -____________: Chiral type of amino acids found in proteins.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -____________: The amino acid with an imidazole side chain.

Draw the general structure of an amino acid at pH 7.0 with the side group shown as an "R."

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -____________: The amino acid with a negatively charged side chain at neutral pH.

Draw the structure of alanine, aspartic acid, and histidine when the pH is 1.0, 7.0, and 12.0.

The amino acid with an indol ring is __________.

Biochemistry and the Unity of Life

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

Protein Three-Dimensional Structure

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