Question 1

Which amino acid has a carboxyl group in its side chain?

Accepted Answer

A)  glutamine 
B)  galanine 
C)  cysteine 
D)  glutamate 
E)  None of the above. 
A)  glutamine 
B)  galanine 
C)  cysteine 
D)  glutamate 
E)  None of the above. D

Question 2

In what pH range is zwitterionic alanine the predominate structure?

Accepted Answer

A)  0-2 
B)  9-14 
C)  8-10 
D)  2-4 
E)  2-9 
A)  0-2 
B)  9-14 
C)  8-10 
D)  2-4 
E)  2-9 E

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

The ____________ group is the functional group that makes an amino acid more reactive than nonpolar amino acids such as valine, alanine, and phenylalanine.

Accepted Answer

The answer of The ____________ group is the functional group...

Question 5

Choose the correct answer from the list below. Not all of the answers will be used.
-____________: Another name for dipolar molecules.

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 6

At a pH of 12, what charged group(s) is/are present in glycine?

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 7

____________ is often seen in a child with a protein-deficient diet.

Accepted Answer

The answer of ____________ is often seen in a child...

Question 8

What is the difference between nonessential and essential amino acids?

Accepted Answer

The former are amino acids tha

Question 9

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 10

Interactions between side chains of and Aspartate and Arginine at neutral pH would be?

Accepted Answer

A)  hydrophobic 
B)  ionic 
C)  hydrogen bonding 
D)  steric 
E)  covalent 
A)  hydrophobic 
B)  ionic 
C)  hydrogen bonding 
D)  steric 
E)  covalent

Question 11

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 12

__________ is an amino acid with a hydrophobic side chain containing a thioether.

Accepted Answer

The answer of __________ is an amino acid with a...

Question 13

Why does this happen?

Accepted Answer

This is a nutritional state where there

Question 14

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 15

What is the net charge of each amino acid for each of the cases in the question above?

Accepted Answer

For glycine, the charges are:

Question 16

What is the advantage of having multiple functional groups in proteins?

Accepted Answer

The rich diversity of function

Question 17

Which amino acids have a side chain that includes a modified carboxyl group, carboxaminde?

Accepted Answer

Asparagine

Question 18

Between the amino and the carboxyl functional group, the ________ has the lowest affinity for a proton.

Accepted Answer

The answer of Between the amino and the carboxyl functional...

Question 19

The amino acid that contains a weakly acidic "phenolic" group is __________.

Accepted Answer

The answer of The amino acid that contains a weakly...

Question 20

Which amino acids contain reactive aliphatic hydroxyl groups?

Accepted Answer

A)  serine and methionine 
B)  serine and threonine 
C)  methionine and threonine 
D)  cysteine and methionine 
E)  cysteine and threonine 
A)  serine and methionine 
B)  serine and threonine 
C)  methionine and threonine 
D)  cysteine and methionine 
E)  cysteine and threonine

Exam 3: Amino Acids

Which amino acid has a carboxyl group in its side chain?

In what pH range is zwitterionic alanine the predominate structure?

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

The ____________ group is the functional group that makes an amino acid more reactive than nonpolar amino acids such as valine, alanine, and phenylalanine.

Choose the correct answer from the list below. Not all of the answers will be used. -____________: Another name for dipolar molecules.

At a pH of 12, what charged group(s) is/are present in glycine?

____________ is often seen in a child with a protein-deficient diet.

What is the difference between nonessential and essential amino acids?

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.

Interactions between side chains of and Aspartate and Arginine at neutral pH would be?

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

__________ is an amino acid with a hydrophobic side chain containing a thioether.

Why does this happen?

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

What is the net charge of each amino acid for each of the cases in the question above?

What is the advantage of having multiple functional groups in proteins?

Which amino acids have a side chain that includes a modified carboxyl group, carboxaminde?

Between the amino and the carboxyl functional group, the ________ has the lowest affinity for a proton.

The amino acid that contains a weakly acidic "phenolic" group is __________.

Which amino acids contain reactive aliphatic hydroxyl groups?

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

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