A new hormone has been isolated from an organism. Although the structure of the hormone has not yet been determined, the hormone is known to exert its effects by forming a hormone-receptor complex that acts as a transcription factor within target cells. What type of hormone is this MOST likely to be?

Question

Quizplus · Accepted Answer

Steroid hormones exert their effects by binding to intracellular receptors and forming hormone-receptor complexes that act as transcription factors within target cells. Peptide and amine hormones bind to cell surface receptors and activate second messenger pathways. Therefore, the hormone described in the question is most likely a steroid hormone.

A New Hormone Has Been Isolated from an Organism