Question 8. How do cells transport small, nonpolar, hydrophobic molecules, such as fatty acids or steroid hormones across the cell membrane? A. Such molecules diffuse freely. B. Via active transport. C. Via ligand-activated transport D. Via endocytosis. E. None of these choices.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Question 8. How do cells transport small,
nonpolar, hydrophobic molecules, such as fatty
acids or steroid hormones across the cell
membrane?
A. Such molecules diffuse freely.
B. Via active transport.
C. Via ligand-activated transport
D. Via endocytosis.
E. None of these choices.
Transcribed Image Text:Question 8. How do cells transport small, nonpolar, hydrophobic molecules, such as fatty acids or steroid hormones across the cell membrane? A. Such molecules diffuse freely. B. Via active transport. C. Via ligand-activated transport D. Via endocytosis. E. None of these choices.
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Introduction:-

All biomembranes are lipid bilayers made up of two amphiphilic monolayers of lipid molecules that are both hydrophilic ("water-loving") and hydrophobic ("water-fearing") in nature. 
The hydrophobic moieties of the lipid molecules create a hydrophobic core within the lipid bilayer, while the hydrophilic head group moieties are exposed to water on both sides of the membrane.

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