Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 6 - Cell Membranes - 6.2 - The Cell Membrane Is Important in Cell Adhesion and Recognition - 6.2 Recap - Learning Outcomes - Page 118: 2

Answer

The three types of junctions in animal cells each have specific purposes in terms of transport and stability. Gap junctions are channels between cells that allow for the flow of water, ions and other small molecules. Tight junctions are watertight and are held closely together by proteins called claudins. Desmosomes act as spot welds between epithelial cells and pin cells together so stretchy tissue such as skin and muscle does not fall apart.

Work Step by Step

The three types of junctions in animal cells each have specific purposes in terms of transport and stability. Gap junctions are channels between cells that allow for the flow of water, ions and other small molecules. Tight junctions are watertight and are held closely together by proteins called claudins. Desmosomes act as spot welds between epithelial cells and pin cells together so stretchy tissue such as skin and muscle does not fall apart.
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