Question 1

Describe the regulation of the enzyme threonine deaminase.

Accepted Answer

This enzyme is inhibited by isoleucine,

Question 2

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 3

This amino acid, in high levels, is correlated with the damage of cells lining the blood vessels.

Accepted Answer

A)  serine 
B)  cysteine 
C)  S-adenosylmethionine 
D)  citrulline 
E)  homocysteine 
A)  serine 
B)  cysteine 
C)  S-adenosylmethionine 
D)  citrulline 
E)  homocysteine

Question 4

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 5

What do S-adenosylmethionine and fruit ripening have in common?

Accepted Answer

S-adenosylmethionine is a prec

Question 6

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 7

Essential amino acids are synthesized by:

Accepted Answer

A)  microorganisms. 
B)  humans. 
C)  plants. 
D)  A and B. 
E)  A and C. 
A)  microorganisms. 
B)  humans. 
C)  plants. 
D)  A and B. 
E)  A and C.

Exam 31: Amino Acids Synthesis

Describe the regulation of the enzyme threonine deaminase.

Amino acid synthesis is generally regulated by:

This amino acid, in high levels, is correlated with the damage of cells lining the blood vessels.

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.

What do S-adenosylmethionine and fruit ripening have in common?

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?

Essential amino acids are synthesized by:

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