Question 1

The cleavage of adenosine triphosphate (ATP) to adenosine monophosphate (AMP) + pyrophosphate is said to supply more energy than the cleavage of ATP to ADP + phosphate.Why?

Accepted Answer

A) ATP → ADP + phosphate cleaves a phosphoanhydride bond, and ATP → AMP + pyrophosphate cleaves a phosphodiester bond. 
B) The cleavage to AMP and pyrophosphate is followed by the degradation of AMP by adenosine deaminase. 
C) The cleavage to AMP and pyrophosphate is followed by the degradation of pyrophosphate. 
D) ATP → ADP + phosphate cleaves a phosphoanhydride bond, and ATP → AMP + pyrophosphate cleaves a phosphate ester bond. 
E) ATP → ADP + phosphate cleaves a phosphate ester bond, and ATP → AMP + pyrophosphate cleaves a phosphoanhydride bond. 
A) ATP → ADP + phosphate cleaves a phosphoanhydride bond, and ATP → AMP + pyrophosphate cleaves a phosphodiester bond. 
B) The cleavage to AMP and pyrophosphate is followed by the degradation of AMP by adenosine deaminase. 
C) The cleavage to AMP and pyrophosphate is followed by the degradation of pyrophosphate. 
D) ATP → ADP + phosphate cleaves a phosphoanhydride bond, and ATP → AMP + pyrophosphate cleaves a phosphate ester bond. 
E) ATP → ADP + phosphate cleaves a phosphate ester bond, and ATP → AMP + pyrophosphate cleaves a phosphoanhydride bond. C

Question 2

Flavoproteins are proteins that contain:

Accepted Answer

A) Heme. 
B) FAD or flavin mononucleotide (FMN). 
C) Nicotinamide adenine dinucleotide (NA
D)  or nicotinamide adenine dinucleotide phosphate (NADP). 
D) Zinc or copper. 
E) Coenzyme A. 
A) Heme. 
B) FAD or flavin mononucleotide (FMN). 
C) Nicotinamide adenine dinucleotide (NA
D)  or nicotinamide adenine dinucleotide phosphate (NADP). 
D) Zinc or copper. 
E) Coenzyme A. B

Question 3

Which labeled group is active in the redox function of the cofactor shown in Figure 5.1, and in which pathway is it most important?

Accepted Answer

A) Label I; transaminations. 
B) Label II; tricarboxylic acid (TC
A)  cycle. 
C) Label III; glycolysis. 
D) Label IV; oxidative phosphorylation. 
E) Label V; folate cycling. 
A) Label I; transaminations. 
B) Label II; tricarboxylic acid (TC
A)  cycle. 
C) Label III; glycolysis. 
D) Label IV; oxidative phosphorylation. 
E) Label V; folate cycling. D

Question 4

Coenzyme A has a very specific function in metabolic pathways.Its task is:

Accepted Answer

A) Transfer of hydrogen. 
B) Transfer of electrons. 
C) Attachment of carboxyl groups. 
D) Activation of monosaccharides for the synthesis of complex carbohydrates. 
E) Activation of organic acids. 
A) Transfer of hydrogen. 
B) Transfer of electrons. 
C) Attachment of carboxyl groups. 
D) Activation of monosaccharides for the synthesis of complex carbohydrates. 
E) Activation of organic acids.

The cleavage of adenosine triphosphate (ATP) to adenosine monophosphate (AMP) + pyrophosphate is said to supply more energy than the cleavage of ATP to ADP + phosphate.Why?

Flavoproteins are proteins that contain:

Which labeled group is active in the redox function of the cofactor shown in Figure 5.1, and in which pathway is it most important?

Coenzyme A has a very specific function in metabolic pathways.Its task is:

Introduction to Biomolecules

Introduction to Protein Structure

Oxygen Transporters: Hemoglobin and Myoglobin

Enzymatic Reactions

DNA, RNA, and Protein Synthesis

The Human Genome

Protein Targeting

Introduction to Genetic Diseases

Viruses

DNA Technology

Biological Membranes

The Cytoskeleton

The Extracellular Matrix

Plasma Proteins

Extracellular Messengers

Intracellular Messengers

Cellular Growth Control and Cancer

Digestive Enzymes

Introduction to Metabolic Pathways

Glycolysis, Tricarboxylic Acid Cycle, and Oxidative Phosphorylation

Carbohydrate Metabolism

The Metabolism of Fatty Acids and Triglycerides

The Metabolism of Membrane Lipids

Lipid Transport

Amino Acid Metabolism

Heme Metabolism

The Metabolism of Purines and Pyrimidines

Vitamins and Minerals

Integration of Metabolism

Filters

Exam 5: Coenzymes

The cleavage of adenosine triphosphate (ATP) to adenosine monophosphate (AMP) + pyrophosphate is said to supply more energy than the cleavage of ATP to ADP + phosphate.Why?

Flavoproteins are proteins that contain:

Which labeled group is active in the redox function of the cofactor shown in Figure 5.1, and in which pathway is it most important?

Coenzyme A has a very specific function in metabolic pathways.Its task is:

Introduction to Biomolecules

Introduction to Protein Structure

Oxygen Transporters: Hemoglobin and Myoglobin

Enzymatic Reactions

DNA, RNA, and Protein Synthesis

The Human Genome

Protein Targeting

Introduction to Genetic Diseases

Viruses

DNA Technology

Biological Membranes

The Cytoskeleton

The Extracellular Matrix

Plasma Proteins

Extracellular Messengers

Intracellular Messengers

Cellular Growth Control and Cancer

Digestive Enzymes

Introduction to Metabolic Pathways

Glycolysis, Tricarboxylic Acid Cycle, and Oxidative Phosphorylation

Carbohydrate Metabolism

The Metabolism of Fatty Acids and Triglycerides

The Metabolism of Membrane Lipids

Lipid Transport

Amino Acid Metabolism

Heme Metabolism

The Metabolism of Purines and Pyrimidines

Vitamins and Minerals

Integration of Metabolism

Filters