Campbell Biology (11th Edition)

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

Chapter 11 - Test Your Understanding - Level 1 - Knowledge/Comprehension - Page 233: 1

Answer

D. Ligand-gated ion channel.

Work Step by Step

Of the answer choices, only D includes an ion channel to immediately allow ions across the membrane. All of the other choices would require more time for other signalling steps to open channels.
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