Question 1

The Michaelis constant

Accepted Answer

A) can be determined using the Lineweaver-Burk plot. 
B) is equal to twice the Vmax. 
C) is equal to the substrate concentration at Vmax/2. 
D) can be determined using the Lineweaver-Burk plot and is equal to the substrate concentration at Vmax/2. 
E) can be determined using the Lineweaver-Burk plot and is equal to twice the Vmax. 
A) can be determined using the Lineweaver-Burk plot. 
B) is equal to twice the Vmax. 
C) is equal to the substrate concentration at Vmax/2. 
D) can be determined using the Lineweaver-Burk plot and is equal to the substrate concentration at Vmax/2. 
E) can be determined using the Lineweaver-Burk plot and is equal to twice the Vmax.

Question 2

________ is the turnover number for a given enzyme.

Accepted Answer

The answer of ________ is the turnover number for a...

Question 3

Which of the following is a mechanism of substrate activation?

Accepted Answer

A) bond distortion 
B) proton transfer 
C) electron transfer 
D) neutron transfer 
E) bond distortion,proton transfer,and electron transfer 
A) bond distortion 
B) proton transfer 
C) electron transfer 
D) neutron transfer 
E) bond distortion,proton transfer,and electron transfer

Question 4

________ inhibitors bind the enzyme at a location other than the active site but still interfere with product formation.

Accepted Answer

The answer of ________ inhibitors bind the enzyme at a...

Question 5

________ are enzymes able to convert a substrate to its mirror image.

Accepted Answer

The answer of ________ are enzymes able to convert a...

Question 6

The ________ velocity of an enzymatic reaction is the velocity at very high substrate concentration.

Accepted Answer

The answer of The ________ velocity of an enzymatic reaction...

Question 7

Substrate activation may involve

Accepted Answer

A) a change in enzyme conformation induced by substrate binding. 
B) accepting protons from the enzyme. 
C) formation of temporary covalent bonds. 
D) donation of protons to the enzyme. 
E) All of these are correct. 
A) a change in enzyme conformation induced by substrate binding. 
B) accepting protons from the enzyme. 
C) formation of temporary covalent bonds. 
D) donation of protons to the enzyme. 
E) All of these are correct.

Question 8

A noncompetitive inhibitor will

Accepted Answer

A) bind to free enzyme. 
B) bind to free product. 
C) decrease Vmax. 
D) decrease Km. 
E) bind to free enzyme and decrease Vmax. 
A) bind to free enzyme. 
B) bind to free product. 
C) decrease Vmax. 
D) decrease Km. 
E) bind to free enzyme and decrease Vmax.

Question 9

According to the EC system,which is not one of the major groups of enzymes?

Accepted Answer

A) proteases 
B) hydrolases 
C) oxidoreductases 
D) transferases 
E) ligases 
A) proteases 
B) hydrolases 
C) oxidoreductases 
D) transferases 
E) ligases

Question 10

Why is the Lineweaver-Burk plot important in enzyme kinetics?

Accepted Answer

A) It is a single-reciprocal plot. 
B) It illustrates enzyme specificity. 
C) It reveals the presence of prosthetic groups in enzymes. 
D) It makes it easier to determine Vmax and Km. 
E) It is nonlinear. 
A) It is a single-reciprocal plot. 
B) It illustrates enzyme specificity. 
C) It reveals the presence of prosthetic groups in enzymes. 
D) It makes it easier to determine Vmax and Km. 
E) It is nonlinear.

Question 11

A sick person often has a fever,which can inhibit the growth of bacteria because

Accepted Answer

A) bacteria reproduce more rapidly at higher body temperature. 
B) enzymes do not function as well at temperatures other than the optimal temperature. 
C) the higher temperature increases the activity of lyases. 
D) sweating removes prosthetic groups from biological enzymes. 
E) fever blocks synthesis of proteins in the bacterial nucleus. 
A) bacteria reproduce more rapidly at higher body temperature. 
B) enzymes do not function as well at temperatures other than the optimal temperature. 
C) the higher temperature increases the activity of lyases. 
D) sweating removes prosthetic groups from biological enzymes. 
E) fever blocks synthesis of proteins in the bacterial nucleus.

Question 12

The site on an enzyme that the substrate binds to is called the ________.

Accepted Answer

The answer of The site on an enzyme that the...

The Michaelis constant

________ is the turnover number for a given enzyme.

Which of the following is a mechanism of substrate activation?

________ inhibitors bind the enzyme at a location other than the active site but still interfere with product formation.

________ are enzymes able to convert a substrate to its mirror image.

The ________ velocity of an enzymatic reaction is the velocity at very high substrate concentration.

Substrate activation may involve

A noncompetitive inhibitor will

According to the EC system,which is not one of the major groups of enzymes?

Why is the Lineweaver-Burk plot important in enzyme kinetics?

A sick person often has a fever,which can inhibit the growth of bacteria because

The site on an enzyme that the substrate binds to is called the ________.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

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Exam 6: Enzymes: the Catalysts of Life

The Michaelis constant

________ is the turnover number for a given enzyme.

Which of the following is a mechanism of substrate activation?

________ inhibitors bind the enzyme at a location other than the active site but still interfere with product formation.

________ are enzymes able to convert a substrate to its mirror image.

The ________ velocity of an enzymatic reaction is the velocity at very high substrate concentration.

Substrate activation may involve

A noncompetitive inhibitor will

According to the EC system,which is not one of the major groups of enzymes?

Why is the Lineweaver-Burk plot important in enzyme kinetics?

A sick person often has a fever,which can inhibit the growth of bacteria because

The site on an enzyme that the substrate binds to is called the ________.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters