Question

Steroid hormones trigger transcription of target genes by Choose one:

A. activating the release of Ca+2 ions that bind to and activate transcription factors.
B. binding directly to DNA and stimulating transcription.
C. activating a kinase cascade that results in the activation of a transcription factor for a set of genes.
D. binding to nuclear receptors that act as transcription factors for specific genes.

Answer 1

Steroid hormones activate gene transcription by binding to nuclear receptors that act as transcription factors, affecting gene expression.

Step-by-step explanation:

Steroid hormones trigger transcription of target genes by binding to nuclear receptors that act as transcription factors for specific genes. These hormones, like testosterone, estrogen, and glucocorticoids, diffuse through the cell membrane and bind to intracellular receptors, either in the cytoplasm or nucleus, forming a hormone-receptor complex. This complex then binds to response elements in the DNA, activating or repressing transcription of specific genes to influence gene expression and regulate cell processes.