Question 1

If an enzyme gave a rate enhancement of 3.4 * 107 over the noncatalyzed reaction, what is the $\Delta$$\Delta$G1$\circ$‡ at 37$\circ$C?

Accepted Answer

A) 5.3 kJ/mol 
B) 45 kJ/mol 
C) 9.5 kJ/mol 
D) 19 kJ/mol 
E) none of the above 
A) 5.3 kJ/mol 
B) 45 kJ/mol 
C) 9.5 kJ/mol 
D) 19 kJ/mol 
E) none of the above

Question 2

An enzyme that catalyzes the intramolecular movement of a functional group from one carbon atom to another would be called a(n)____________.

Accepted Answer

A) isomerase 
B) transferase 
C) oxidoreductase 
D) kinase 
E) ligase 
A) isomerase 
B) transferase 
C) oxidoreductase 
D) kinase 
E) ligase

Question 3

Since an enzyme is a catalyst, which of the following must be true?

Accepted Answer

A) an enzyme-catalyzed reaction is always exergonic 
B) enzymes increase the rate of a reaction by providing a completely alternate mechanism to the uncatalyzed reaction 
C) over the course of an enzyme-catalyzed reaction, the enzyme is not changed 
D) in the absence of an enzyme, the reaction that is normally catalyzed by the enzyme will not occur 
E) enzyme-catalyzed reactions never reach equilibrium 
A) an enzyme-catalyzed reaction is always exergonic 
B) enzymes increase the rate of a reaction by providing a completely alternate mechanism to the uncatalyzed reaction 
C) over the course of an enzyme-catalyzed reaction, the enzyme is not changed 
D) in the absence of an enzyme, the reaction that is normally catalyzed by the enzyme will not occur 
E) enzyme-catalyzed reactions never reach equilibrium

Question 4

What type of inhibitor would give the results seen in the following plot?

Accepted Answer

A) competitive inhibitor 
B) mixed inhibitor 
C) noncompetitive inhibitor 
D) uncompetitive inhibitor 
E) none of the above 
A) competitive inhibitor 
B) mixed inhibitor 
C) noncompetitive inhibitor 
D) uncompetitive inhibitor 
E) none of the above

If an enzyme gave a rate enhancement of 3.4 * 10⁷ over the noncatalyzed reaction, what is the $\Delta$ $\Delta$ G1^$\circ$^‡ at 37^$\circ$C?

An enzyme that catalyzes the intramolecular movement of a functional group from one carbon atom to another would be called a(n)____________.

Since an enzyme is a catalyst, which of the following must be true?

What type of inhibitor would give the results seen in the following plot?

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

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

Nucleotide Metabolism

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 11: Enzymes: Biological Catalysts

If an enzyme gave a rate enhancement of 3.4 * 107 over the noncatalyzed reaction, what is the Δ\DeltaΔΔ\DeltaΔ G1 ∘\circ∘ ‡ at 37 ∘\circ∘ C?

An enzyme that catalyzes the intramolecular movement of a functional group from one carbon atom to another would be called a(n)____________.

Since an enzyme is a catalyst, which of the following must be true?

What type of inhibitor would give the results seen in the following plot?

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

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

Nucleotide Metabolism

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

If an enzyme gave a rate enhancement of 3.4 * 10⁷ over the noncatalyzed reaction, what is the $\Delta$ $\Delta$ G1^$\circ$^‡ at 37^$\circ$C?