Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 5 - Membranes - Review Questions - Apply: 2



Work Step by Step

A. is not true since the contents of the bilayer can affect how quickly a nonpolar molecule crosses a membrane but not whether it does so, and B. is true because concentration gradients drive diffusion--whether the molecule will cross depends on the appropriate concentration gradient being present. C. is not true since a nonpolar molecule can cross the membrane without the help of proteins. Since A. and C. are wrong, D. is also wrong.
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.