The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person. Introduction: Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Question

Want to see the full answer?

Answer 1

Question

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Give only the mode of inheritance consistent with all three pedigrees and only two reasons that support this, nothing more, (it shouldn't take too long)

O

Describe the principle of homeostasis.

Answer 2

Question

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Answer 6

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Answer 7

Chapter 17, Problem 14CP

Summary Introduction

To determine:

The effect of deficiency of phosphodiesterase activity in photoreceptors, on the vision of a person.

Introduction:

Phosphodiesterase is the enzyme that breaks the bonds between the phosphate groups. The enzyme is activated when the opsin is activated, transducin molecule acts upon its inactive form. In the cell, the phosphodiesterase catalyses the breakdown of cyclic GMP, that decreases the concentration of cyclic GMP. The lower levels of cyclic GMP induce the closing of the sodium ion channels which causes hyperpolarization of the plasma membrane. This decreases the release of neurotransmitters which sends a signal that the photoreceptor has absorbed a photon.

Answer 8

Expert Solution & Answer

Answer 9

Expert Solution & Answer

Answer 10

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 11

Ch. 17 - Prob. 1CP Ch. 17 - Prob. 2CP Ch. 17 - Prob. 3CP Ch. 17 - Prob. 4CP Ch. 17 - If you completely dry the surface of your tongue...Ch. 17 - Prob. 6CP Ch. 17 - Prob. 7CP Ch. 17 - Prob. 8CP Ch. 17 - Prob. 9CP Ch. 17 - Prob. 10CP

Solution Summary: The author analyzes the effect of deficiency of phosphodiesterase activity in photoreceptors on vision.

Concept explainers

Videos

Want to see the full answer?

Chapter 17 Solutions