Chapter 6, Problem 22RQ

a.

Summary Introduction

To determine: The name of the phenomenon that explains the signal cascade for rhodopsin.

Introduction: Receptors are the structures that compose of proteins and promote binding of certain molecules that act as signaling molecules and bring changes in the functioning of the cell. The receptors are specific and allow the binding of molecules only from a specific family. There are three different ways in which receptors function namely amplification, integration, and relaying of the signal.

b.

Summary Introduction

To determine: The total number of GMP molecules that will be formed by a single rhodopsin molecule.

Introduction: Rhodopsin pigment is found in the rods of the retina, and it is highly sensitive to light. Hence, these cells play an important in visualization in the dark. Rhodopsin triggers a series of reactions and leads to photobleaching. Rhodopsin is important for visual phototransduction reaction in the rod cells.