Question

After steroid hormones bind to receptors they for a hormone-receptor complex which is responsible for which of the following?

(A) altering transcription of genes
(B) causing positive feedback loop to generate more hormone
(C) activate primary messengers
(D) none of the above

Answer 1

The hormone-receptor complex formed by steroid hormones binding to receptors is chiefly responsible for altering the transcription of genes, thus affecting gene expression and protein synthesis within the cell.

Step-by-step explanation:

After steroid hormones bind to receptors, they form a hormone-receptor complex which is responsible for altering transcription of genes. This complex acts as a transcription regulator, entering the nucleus of the cell where it binds to DNA sequences known as response elements. These elements are part of the gene's promoter and the binding results in increasing or decreasing the synthesis of messenger RNA (mRNA), subsequently altering gene expression and the amount of protein produced within the cell.