Question 1

_____ catalyzes the synthesis of ____,a molecule that signals vasodilation,from the precursor _____

Accepted Answer

A) NOS;nitric oxide (NO);arginine 
B) Nitrous oxidase;nitrous oxide;arginine 
C) Arginate;nitric oxide (NO);citrulline 
D) Citrulline dehydrogenase;nitrous oxide;citrulline 
E) none of the above 
A) NOS;nitric oxide (NO);arginine 
B) Nitrous oxidase;nitrous oxide;arginine 
C) Arginate;nitric oxide (NO);citrulline 
D) Citrulline dehydrogenase;nitrous oxide;citrulline 
E) none of the above

Question 2

Matching
Choose the correct answer from the list.Not all the answers will be used.

-A phenomenon in which intermediates are directly transferred from one active site to another is ______.

Accepted Answer

A)  ribosomes 
B)  jaundice 
C)  channeling 
D)  26S proteasome 
E)  glutamine synthetase
F) alanine
G) glutamate
H) vitamin B6
I) anammox
J) glutamine transferase
K) THF
L) autotroph
M) vitamin D
N) lysosomes
O) diazotrophs 
A)  ribosomes 
B)  jaundice 
C)  channeling 
D)  26S proteasome 
E)  glutamine synthetase
F) alanine
G) glutamate
H) vitamin B6
I) anammox
J) glutamine transferase
K) THF
L) autotroph
M) vitamin D
N) lysosomes
O) diazotrophs

Question 3

Nitrogenase
(I)can be found in most bacteria and a few invertebrate animals.
(II)contains unique redox centers that contain both Fe and Mo.
(III)changes in conformation as a result of ATP hydrolysis.
(IV)carries out a reaction that reduces nitrogen to NO.

Accepted Answer

A) I,II,III,IV 
B) II,III,IV 
C) II,III 
D) III,IV 
E) IV only 
A) I,II,III,IV 
B) II,III,IV 
C) II,III 
D) III,IV 
E) IV only

Question 4

The majority of amino acids are deaminated by a ______ reaction.

Accepted Answer

A) transaminmation 
B) reduction 
C) condensation 
D) transacetylation 
E) oxidation 
A) transaminmation 
B) reduction 
C) condensation 
D) transacetylation 
E) oxidation

Question 5

Matching
Choose the correct answer from the list.Not all the answers will be used.

-Organisms known as _____ can fix nitrogen into metabolically useful molecules.

Accepted Answer

A)  ribosomes 
B)  jaundice 
C)  channeling 
D)  26S proteasome 
E)  glutamine synthetase
F) alanine
G) glutamate
H) vitamin B6
I) anammox
J) glutamine transferase
K) THF
L) autotroph
M) vitamin D
N) lysosomes
O) diazotrophs 
A)  ribosomes 
B)  jaundice 
C)  channeling 
D)  26S proteasome 
E)  glutamine synthetase
F) alanine
G) glutamate
H) vitamin B6
I) anammox
J) glutamine transferase
K) THF
L) autotroph
M) vitamin D
N) lysosomes
O) diazotrophs

Question 6

The aminotransferase reaction,in which an enzyme-PLP Schiff base forms,
(I)is ATP dependent.
(II)results in formation of a hydroxylaldehyde.
(III)results in formation of an $\alpha$-ketoacid.
(IV)requires an active site lysine.

Accepted Answer

A) I,III,IV 
B) I,IV 
C) II,III 
D) I,II,III 
E) II,III,IV 
A) I,III,IV 
B) I,IV 
C) II,III 
D) I,II,III 
E) II,III,IV

Question 7

Which of the following reaction sequences could result in glucose synthesis?

Accepted Answer

A) fumarate $\to$ arginine $\to$ urea 
B) fumarate $\to$ malate $\to$oxaloacetate 
C) citrulline $\to$ urea $\to$ aspartate 
D) urea $\to$ arginine $\to$ ornithine 
E) none of the above 
A) fumarate $\to$ arginine $\to$ urea 
B) fumarate $\to$ malate $\to$oxaloacetate 
C) citrulline $\to$ urea $\to$ aspartate 
D) urea $\to$ arginine $\to$ ornithine 
E) none of the above

Question 8

Matching
Choose the correct answer from the list.Not all the answers will be used.

-Infants who cannot properly degrade bilirubin develop ______.

Accepted Answer

A)  ribosomes 
B)  jaundice 
C)  channeling 
D)  26S proteasome 
E)  glutamine synthetase
F) alanine
G) glutamate
H) vitamin B6
I) anammox
J) glutamine transferase
K) THF
L) autotroph
M) vitamin D
N) lysosomes
O) diazotrophs 
A)  ribosomes 
B)  jaundice 
C)  channeling 
D)  26S proteasome 
E)  glutamine synthetase
F) alanine
G) glutamate
H) vitamin B6
I) anammox
J) glutamine transferase
K) THF
L) autotroph
M) vitamin D
N) lysosomes
O) diazotrophs

Question 9

Which of the following is required for synthesis of tryptophan?

Accepted Answer

A) serine 
B) phosphoenolpyruvate 
C) erythrose-4-phosphate 
D) all of the above 
E) none of the above 
A) serine 
B) phosphoenolpyruvate 
C) erythrose-4-phosphate 
D) all of the above 
E) none of the above

Question 10

A mutation in GDH of patients with HI/HA (hypoglycemia/hyperammonemia)results in a decrease in allosteric control of GDH via GTP.Which of the following will be observed in the patients?

Accepted Answer

A) an increase in ammonia 
B) an increase in glutamate 
C) an increase in NADH 
D) A and B 
E) A and C 
A) an increase in ammonia 
B) an increase in glutamate 
C) an increase in NADH 
D) A and B 
E) A and C

_ catalyzes the synthesis of ,a molecule that signals vasodilation,from the precursor _

Matching Choose the correct answer from the list.Not all the answers will be used. -A phenomenon in which intermediates are directly transferred from one active site to another is ______.

Nitrogenase (I)can be found in most bacteria and a few invertebrate animals. (II)contains unique redox centers that contain both Fe and Mo. (III)changes in conformation as a result of ATP hydrolysis. (IV)carries out a reaction that reduces nitrogen to NO.

The majority of amino acids are deaminated by a ______ reaction.

Matching Choose the correct answer from the list.Not all the answers will be used. -Organisms known as _____ can fix nitrogen into metabolically useful molecules.

The aminotransferase reaction,in which an enzyme-PLP Schiff base forms, (I)is ATP dependent. (II)results in formation of a hydroxylaldehyde. (III)results in formation of an $\alpha$ -ketoacid. (IV)requires an active site lysine.

Which of the following reaction sequences could result in glucose synthesis?

Matching Choose the correct answer from the list.Not all the answers will be used. -Infants who cannot properly degrade bilirubin develop ______.

Which of the following is required for synthesis of tryptophan?

A mutation in GDH of patients with HI/HA (hypoglycemia/hyperammonemia)results in a decrease in allosteric control of GDH via GTP.Which of the following will be observed in the patients?

Introduction to the Chemistry of Life

Water

Nucleotides, nucleic Acids, and Genetic Information

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, inhibition and Control

Biochemical Signaling

Introduction to Metabolism

Glucose Catabolism

Glycogen Metabolism and Gluconeogenesis

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

DNA Replication, repair and Recombination

Transcription and Rna Processing

Protein Synthesis

Regulation of Gene Expression

Filters

Exam 21: Amino Acid Metabolism

_____ catalyzes the synthesis of ____,a molecule that signals vasodilation,from the precursor _____

Matching Choose the correct answer from the list.Not all the answers will be used. -A phenomenon in which intermediates are directly transferred from one active site to another is ______.

Nitrogenase (I)can be found in most bacteria and a few invertebrate animals. (II)contains unique redox centers that contain both Fe and Mo. (III)changes in conformation as a result of ATP hydrolysis. (IV)carries out a reaction that reduces nitrogen to NO.

The majority of amino acids are deaminated by a ______ reaction.

Matching Choose the correct answer from the list.Not all the answers will be used. -Organisms known as _____ can fix nitrogen into metabolically useful molecules.

The aminotransferase reaction,in which an enzyme-PLP Schiff base forms, (I)is ATP dependent. (II)results in formation of a hydroxylaldehyde. (III)results in formation of an α\alphaα -ketoacid. (IV)requires an active site lysine.

Which of the following reaction sequences could result in glucose synthesis?

Matching Choose the correct answer from the list.Not all the answers will be used. -Infants who cannot properly degrade bilirubin develop ______.

Which of the following is required for synthesis of tryptophan?

A mutation in GDH of patients with HI/HA (hypoglycemia/hyperammonemia)results in a decrease in allosteric control of GDH via GTP.Which of the following will be observed in the patients?

Introduction to the Chemistry of Life

Water

Nucleotides, nucleic Acids, and Genetic Information

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, inhibition and Control

Biochemical Signaling

Introduction to Metabolism

Glucose Catabolism

Glycogen Metabolism and Gluconeogenesis

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

DNA Replication, repair and Recombination

Transcription and Rna Processing

Protein Synthesis

Regulation of Gene Expression

Filters

_ catalyzes the synthesis of ,a molecule that signals vasodilation,from the precursor _

The aminotransferase reaction,in which an enzyme-PLP Schiff base forms, (I)is ATP dependent. (II)results in formation of a hydroxylaldehyde. (III)results in formation of an $\alpha$ -ketoacid. (IV)requires an active site lysine.