Which type of hormone is characterized by its inability to easily cross cell membranes?
Understand the Problem
The question is asking about the type of hormone that cannot easily cross cell membranes, which indicates it is inquiring about properties of different hormone classes.
Answer
Hydrophilic or water-soluble hormones.
Hydrophilic or water-soluble hormones cannot easily cross cell membranes because they cannot diffuse through the lipid bilayer. Instead, they bind to surface cell-membrane receptors.
Answer for screen readers
Hydrophilic or water-soluble hormones cannot easily cross cell membranes because they cannot diffuse through the lipid bilayer. Instead, they bind to surface cell-membrane receptors.
More Information
Hydrophilic hormones include peptide hormones and amines, which work by binding to receptors on the cell surface and activating secondary messenger pathways.
Tips
A common mistake is to confuse hydrophilic hormones with steroid hormones, which are lipid-soluble and can cross the cell membrane.
Sources
- Hormones | Anatomy and Physiology II - Lumen - courses.lumenlearning.com
- Hormones – Anatomy & Physiology - UH Pressbooks - pressbooks-dev.oer.hawaii.edu
- Hormone Receptor - an overview | ScienceDirect Topics - sciencedirect.com
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