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Chapter 1: Q. 25. (page 7)

How can hormones mediate changes?

Short Answer

Expert verified
Hormones can cause changes directly by binding to the intracellular hormone receptor and regulating gene transcription, or indirectly, depending on the location of the protein receptor on the target cell and the chemical structure of the hormone.
by binding to cell surface hormone receptors and stimulating signaling pathways

Step by step solution

01

Introduction 

Hormones affect target cells by binding to a specific hormone receptor.
Despite the fact that hormones circulate throughout the body and come into contact with various cell types, they only affect cells that have the necessary receptors.
02

Explanation 

Hormones communicate chemically.
Hormones interact with the body in the bloodstream by travelling to the target cell and causing a specific change or effect on that cell.
Hormones can also cause changes in cells in neighboring tissues.
For example, oestrogen produced by a woman's ovaries prepares the uterus for monthly menstrual cycles, whereas the same molecule also binds to bone cells to maintain bone strength.

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