Which of the following best describes the mechanism by which steroid hormones control gene expression?
a. Steroid hormones transport mRNA from the nucleus into the cytoplasm, where it is translated into protein.
b. Chaperone proteins transport steroid hormones into the cell and guide them to their target genes.
c. Steroid hormones enter a cell, bind directly to hormone response elements (HREs), and enhance transcription.
d. Steroid hormones that enter the cell activate receptors. These hormone-receptor complexes then bind HREs and influence gene expression.