A

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter1: Introduction To Physiology And Homeostasis

Section: Chapter Questions

Problem 8RE

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Concept explainers

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.

Question

A cell releases a ligand that travels through the extracellular matrix to a nearby target cell. There, the ligand binds to a receptor on the target cells membrane. This is an example of _______ signaling using a _______ ligand.

		paracrine ; hydrophobic
		paracrine ; hydrophillic
		endocrine ; hydrophobic
		endocrine ; hydrophillic
		autocrine ; hydrophobic
		autocrine ; hydrophillic

Expert Solution

Step 1

Introduction :-

The ability of cells to communicate through chemical signals originated in single cells and was in essential for the evolution of multicellular organisms.
Cells send and receive chemical messages constantly to coordinate the actions of distant organs, tissues, and cells.
Cells communicate via various types of signalling that allow chemicals to travel to target cells in order to elicit response.

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