Anatomy & Physiology: The Unity of Form and Function, 7th Edition

Published by McGraw-Hill Education
ISBN 10: 0073403717
ISBN 13: 978-0-07340-371-7

Chapter 3 - Section 3.4 - Figure 3.27 - The Nucleus - Page 102: 1

Answer

Fig. 3.27 Large molecules such as enzymes and and RNA must pass through nuclear pores. However, the pores of plasma membranes should not be large enough to allow such molecules ( enzymes and RNA) to escape from the cell

Work Step by Step

A nuclear membrane has over 3000 pores with diameter of about 7.5nm. An mRNA molecule is only about .75 nm and hemoglobin is about 5 nm diameter.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.