Question 1

S-adenosylmethionine carries which groups?

Accepted Answer

A)  methyl 
B)  CO2 
C)  ammonia 
D)  None of the above. 
E)  All of the above. 
A)  methyl 
B)  CO2 
C)  ammonia 
D)  None of the above. 
E)  All of the above.

Question 2

The binding of serine to 3-phosphoglycerate dehydrogenase induces a __________________ in Vmax.

Accepted Answer

The answer of The binding of serine to 3-phosphoglycerate dehydrogenase...

Question 3

Which gaseous plant hormone is involved in triggering ripening?

Accepted Answer

A)  melanin 
B)  epinephrine 
C)  ethylene 
D)  A and B 
E)  A and C 
A)  melanin 
B)  epinephrine 
C)  ethylene 
D)  A and B 
E)  A and C

Question 4

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-The final product pathway which inhibits an enzyme that catalyzes its production typically takes place at the _______________ step.

Accepted Answer

A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3) 
A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3)

Question 5

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is the original nitrogen source for the nitrogen found in amino acids.

Accepted Answer

A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3) 
A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3)

Question 6

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is the site of nitrogen fixation by nitrogenase enzymes.

Accepted Answer

A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3) 
A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3)

Question 7

__________________ ATP molecules are hydrolyzed for each N2 reduced.

Accepted Answer

The answer of __________________ ATP molecules are hydrolyzed for each...

Question 8

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-Methylcobalamine is derived from vitamin _______________.

Accepted Answer

A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3) 
A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3)

Question 9

Glutamate is the precursor for the amino acids glutamine, proline, and __________________.

Accepted Answer

The answer of Glutamate is the precursor for the amino...

Question 10

Organisms capable of carrying out reduction of atmospheric nitrogen include:

Accepted Answer

A)  some bacteria and archaea. 
B)  higher eukaryotic organisms, such as mammals. 
C)  all plants. 
D)  All of the above. 
E)  None of the above. 
A)  some bacteria and archaea. 
B)  higher eukaryotic organisms, such as mammals. 
C)  all plants. 
D)  All of the above. 
E)  None of the above.

Question 11

What is a major difference between the amino acid biosynthetic capacity of prokaryotic organisms and humans?

Accepted Answer

Whereas microorganisms can make most of

Question 12

Only a few prokaryotes, such as __________________, are able convert N2 to ammonia.

Accepted Answer

nitrogen-f

Question 13

What is the MoFecofactor?

Accepted Answer

This unusual redox center is the site of

Question 14

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is a cofactor for transamination reactions.

Accepted Answer

A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3) 
A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3)

Question 15

What is enzyme multiplicity?

Accepted Answer

This is a strategy for regulation in whi

Question 16

What would be the result of a pathway such as that shown in Figure 31.12 if only one enzyme catalyzed the first reaction? What if there were inhibition only by X and not by Y?

Accepted Answer

The shunting of metabolites between the

Question 17

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-A versatile carrier of one-carbon units is _______________.

Accepted Answer

A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3) 
A) atmospheric nitrogen (N2) 
B) 3-phosphoglycerate 
C) cumulative 
D) nitrogen fixation 
E) B12
F)histidine
G)tetrahydrofolate
H)committed
I)pyridoxal phosphate
J)enzyme multiplicity
K)MoFe cofactor
L)ammonia (NH3)

Question 18

Amino acid synthesis is generally regulated by:

Accepted Answer

A)  turnover. 
B)  diet. 
C)  feedback and allosteric enzyme regulation. 
D)  A and B. 
E)  A, B, and C. 
A)  turnover. 
B)  diet. 
C)  feedback and allosteric enzyme regulation. 
D)  A and B. 
E)  A, B, and C.

Question 19

Homocysteine is an intermediate in the synthesis of cysteine and __________________.

Accepted Answer

The answer of Homocysteine is an intermediate in the synthesis...

Question 20

The α-amino group found in most amino acids comes from __________________ through a transamination reaction.

Accepted Answer

The answer of The α-amino group found in most amino...

Exam 31: Amino Acids Synthesis

S-adenosylmethionine carries which groups?

The binding of serine to 3-phosphoglycerate dehydrogenase induces a __________________ in Vmax.

Which gaseous plant hormone is involved in triggering ripening?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The final product pathway which inhibits an enzyme that catalyzes its production typically takes place at the _______________ step.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is the original nitrogen source for the nitrogen found in amino acids.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is the site of nitrogen fixation by nitrogenase enzymes.

__________________ ATP molecules are hydrolyzed for each N2 reduced.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -Methylcobalamine is derived from vitamin _______________.

Glutamate is the precursor for the amino acids glutamine, proline, and __________________.

Organisms capable of carrying out reduction of atmospheric nitrogen include:

What is a major difference between the amino acid biosynthetic capacity of prokaryotic organisms and humans?

Only a few prokaryotes, such as __________________, are able convert N2 to ammonia.

What is the MoFecofactor?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is a cofactor for transamination reactions.

What is enzyme multiplicity?

What would be the result of a pathway such as that shown in Figure 31.12 if only one enzyme catalyzed the first reaction? What if there were inhibition only by X and not by Y?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -A versatile carrier of one-carbon units is _______________.

Amino acid synthesis is generally regulated by:

Homocysteine is an intermediate in the synthesis of cysteine and __________________.

The α-amino group found in most amino acids comes from __________________ through a transamination reaction.

Biochemistry and the Unity of Life

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

Amino Acids

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

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