Whether polyphenoloxidase requires a cofactor or not has to be determined. Concept Introduction: The reaction catalyzed by polyphenoloxidase is given as follows: However for efficient oxidation it requires Cu 2 + ions to be present at its active site.

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Answer 1

Question

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

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Experiment 1 Data Table 1: Conservation of Mass - Initial Mass Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Reaction Mass of test tube and 5.0% HC₂H₂O2 (g) # (A) (B) Mass of NaHCO, (g) Mass of balloon and NaHCO, (g) (C) 0.10 1 0829 14.38g 0.20 2 0.929 14.29g 0.35 1.00g 3 14.25g 0.50 1.14g 14.29 Experiment 1 Data Table 2: Moles of HC2H3O2 Reaction Volume of Mass of Moles of HC₂H₂O₂ 5.0% Vinegar (g) (ML) 5.0 0.25 0042 mol 2 5.0 0.25 0042 mol 3 5.0 0.25 0042 mol 5.0 0.25 0042 mol Experiment 1 Data Table 3: Moles of NaHCO3 Reaction Mass of NaHCO (g) 10g 20g 35g 50g Experiment 1 Data Table 4: Theoretical Yield of CO₂ Reaction # 1 2 3 Experiment 1 Total mass before reaction (g) (D=A+C) 15.29 15.21g 15.25g 15.349 Exercise 1 Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Data Table 1 Data Table 2 DataTable 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Moles of NaHCO 0012 mol 0025 mol 0044 mol 0062 mol…

The chemical reaction you investigated is a two-step reaction. What type of reaction occurs in each step? How did you determine your answer?

Answer 2

Question

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

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Answer 3

Question

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

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Answer 4

Question

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

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Answer 5

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

Answer 6

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

Answer 7

Chapter 19, Problem 19.90QP

(a)

Interpretation Introduction

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

Answer 8

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

Answer 9

(a)

Interpretation Introduction

Interpretation:

The nature of inhibition shown by phenylthiourea has to be determined.

Concept Introduction:

Certain inhibitors may compete to bind at the active site of the enzyme as they resemble the structure of the natural substrate of that particular enzyme. They may occupy the active site for a transient period of time as they are held by only weak forces and thus dissociate quickly. They are termed as reversible competitive inhibitors. Unlike the case of irreversible inhibition they are bound strongly via covalent interaction that does not allow the inhibitor to dissociate from the active site. The significance of such inhibition is that it can be reversed if the natural substrate can be bound to the enzyme with stronger forces or if the concentration of the natural substrate is increased.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 19.8 - Prob. 19.12Q Ch. 19.10 - Prob. 19.13Q Ch. 19.10 - Prob. 19.14Q Ch. 19.10 - Prob. 19.15Q Ch. 19.10 - Prob. 19.16Q Ch. 19.11 - Prob. 19.17Q Ch. 19.11 - Prob. 19.18Q Ch. 19.11 - Prob. 19.19Q Ch. 19.11 - Prob. 19.20Q Ch. 19 - Prob. 19.21QP

Whether polyphenoloxidase requires a cofactor or not has to be determined. Concept Introduction: The reaction catalyzed by polyphenoloxidase is given as follows: However for efficient oxidation it requires Cu 2 + ions to be present at its active site.

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Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.

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Chapter 19 Solutions

Whether polyphenoloxidase requires a cofactor or not has to be determined. Concept Introduction: The reaction catalyzed by polyphenoloxidase is given as follows: However for efficient oxidation it requires Cu 2 + ions to be present at its active site.

Videos

Interpretation: Whether polyphenoloxidase requires a cofactor or not has to be determined. Concept Introduction: The reaction catalyzed by polyphenoloxidase is given as follows: However for efficient oxidation it requires Cu2+ ions to be present at its active site.

Want to see the full answer?

Chapter 19 Solutions

Interpretation:

Whether polyphenoloxidase requires a cofactor or not has to be determined.

Concept Introduction:

The reaction catalyzed by polyphenoloxidase is given as follows:

However for efficient oxidation it requires Cu2+ ions to be present at its active site.