Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 4 - Cell Structure - Review Questions - Understand - Page 86: 5

Answer

C.

Work Step by Step

The subunits in C. are indeed part of intermediate filaments, while in A. and B. the wrong subunit is given for each kind of larger structures (microfilaments contain actin, and microtubules contain tubulin). The smooth endoplasmic reticulum (D.) is not part of the cytoskeleton.
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