Cell Signaling Tutorial

The Biology Project > Cell Biology > Cell Signaling > Problem Set

Cell Signaling Problem Set

Problem 6: Steroid Hormones

Estrogen and testosterone are steroid hormones, and are most likely to bind to:

A. membrane ion channel

B. enzyme linked membrane receptor

C. G-protein linked membrane receptor

D.
cytoplasmic receptors

Yes, the steroid hormones are soluble in hydrophobic environments and are able to pass through the cell membrane. In the cytoplasm of the cell, steroid hormones bind receptors changing their structure and causing the complex to pass into the nucleus to alter gene expression.

Problem 6 | Tutorial | Problem 7

The Biology Project > Cell Biology > Cell Signaling > Problem Set

The Biology Project
Department of Biochemistry and Molecular Biophysics
University of Arizona
May 2002
Revised: August 2004
Contact the Development Team