Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 11 - 11.3 - Concept Check - Page 225: 4


These gated calcium channels allow calcium ions from internal stores to diffuse into the cytosol, raising the calcium ion concentration there.

Work Step by Step

Calcium is normally kept at a low concentration, by energy-consuming pumps, in the cytosol so that it can serve as an obvious signal when its concentration rises due to the action of these channels.
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