Steroid hormones ________.
A)usually trigger a signal transduction pathway when they bind to a membrane receptor
B)usually bind to mRNA in the cytoplasm to initiate transcription
C)usually bind to receptors in the cytoplasm or nucleus
D)usually bind to rRNA to prevent translation

Question

Quizplus · Accepted Answer

Steroid hormones are lipophilic and can readily diffuse across the cell membrane. Once inside the cell, they bind to receptors located either in the cytoplasm or nucleus of the target cell. This binding triggers a conformational change in the receptor, which in turn initiates gene transcription and protein synthesis. Steroid hormones do not typically trigger a signal transduction pathway when binding to a membrane receptor. They also do not bind to mRNA or rRNA.

Steroid Hormones ________