Question 1

Which of the following coenzymes contains an adenylate group?

Accepted Answer

A) cobalamin 
B) tetrahydrofolate 
C) thiamine pyrophosphate 
D) pyridoxal phosphate 
E) coenzyme A 
A) cobalamin 
B) tetrahydrofolate 
C) thiamine pyrophosphate 
D) pyridoxal phosphate 
E) coenzyme A

Question 2

Which of the following describes the coenzyme involved with thymidylate synthase?

Accepted Answer

A) 5-methyl-THF serves as the methyl donor 
B) 10-methyl-THF serves as the methyl donor 
C) 5,10-methylene-THF serves as both methylene donor and reducing agent 
D) 5,10-methenyl-THF serves as both methylene donor and reducing agent 
E) S-adenosylmethionine serves as the methyl donor 
A) 5-methyl-THF serves as the methyl donor 
B) 10-methyl-THF serves as the methyl donor 
C) 5,10-methylene-THF serves as both methylene donor and reducing agent 
D) 5,10-methenyl-THF serves as both methylene donor and reducing agent 
E) S-adenosylmethionine serves as the methyl donor

Question 3

During the conversion of IMP to GMP and AMP, __________ serves as the nitrogen source for GMP, while _________ serves as the nitrogen source for AMP.

Accepted Answer

A) glutamate, asparagine 
B) glutamate, aspartate 
C) glutamine, asparagine 
D) glutamine, aspartate 
E) none of the above 
A) glutamate, asparagine 
B) glutamate, aspartate 
C) glutamine, asparagine 
D) glutamine, aspartate 
E) none of the above

Question 4

Which of the following is the correct structure for PRPP?

Accepted Answer

A)    
B)    
C)    
D)    
E) none of the above 
A)    
B)    
C)    
D)    
E) none of the above

Question 5

Which of the following shows the correct and complete flow of electrons for ribonucleotide reductase?

Accepted Answer

A) NADH$\rarr$FAD $\rarr$thioredoxin $\rarr$ ribonucleotide reductase 
B) NADPH $\rarr$ glutathione $\rarr$ glutaredoxin $\rarr$ ribonucleotide reductase 
C) NADPH $\rarr$ thioredoxin $\rarr$cytochrome-b $\rarr$ ribonucleotide reductase 
D) FADH2 $\rarr$glutathione $\rarr$ glutaredoxin $\rarr$ribonucleotide reductase 
E) none of the above 
A) NADH$\rarr$FAD $\rarr$thioredoxin $\rarr$ ribonucleotide reductase 
B) NADPH $\rarr$ glutathione $\rarr$ glutaredoxin $\rarr$ ribonucleotide reductase 
C) NADPH $\rarr$ thioredoxin $\rarr$cytochrome-b $\rarr$ ribonucleotide reductase 
D) FADH2 $\rarr$glutathione $\rarr$ glutaredoxin $\rarr$ribonucleotide reductase 
E) none of the above

Which of the following coenzymes contains an adenylate group?

Which of the following describes the coenzyme involved with thymidylate synthase?

During the conversion of IMP to GMP and AMP, __ serves as the nitrogen source for GMP, while _ serves as the nitrogen source for AMP.

Which of the following is the correct structure for PRPP?

Which of the following shows the correct and complete flow of electrons for ribonucleotide reductase?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

The Three-Dimensional Structure of Proteins

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Carbohydrates: Sugars, Saccharides, Glycans

Lipids, Membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, Gluconeogenesis, Glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, Oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids, Triacylglycerols, and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, Steroids, Isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, Utilization, and Turnover

Metabolism of Nitogenous Compounds II: Amino Acids, Porphyrins, and Neurotransmitters

Mechanisms of Signal Transduction

Genes, Genomes and Chromosomes

DNA Replication

DNA Restructuring: Repair, Recombination, Rearrangement, Amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters

Exam 22: Nucleotide Metabolism

Which of the following coenzymes contains an adenylate group?

Which of the following describes the coenzyme involved with thymidylate synthase?

During the conversion of IMP to GMP and AMP, __________ serves as the nitrogen source for GMP, while _________ serves as the nitrogen source for AMP.

Which of the following is the correct structure for PRPP?

Which of the following shows the correct and complete flow of electrons for ribonucleotide reductase?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

The Three-Dimensional Structure of Proteins

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Carbohydrates: Sugars, Saccharides, Glycans

Lipids, Membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, Gluconeogenesis, Glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, Oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids, Triacylglycerols, and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, Steroids, Isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, Utilization, and Turnover

Metabolism of Nitogenous Compounds II: Amino Acids, Porphyrins, and Neurotransmitters

Mechanisms of Signal Transduction

Genes, Genomes and Chromosomes

DNA Replication

DNA Restructuring: Repair, Recombination, Rearrangement, Amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters

During the conversion of IMP to GMP and AMP, __ serves as the nitrogen source for GMP, while _ serves as the nitrogen source for AMP.