iGenetics 3rd Edition by Peter Russell

Exercise 4

Both peptide and steroid hormones can affect gene regulation of a targeted population of cells.
a. What is a hormone?
b. Distinguish between the mechanisms by which a peptide and a steroid hormone affect gene expression.
c. What role does each of the following have in a physiological response to a peptide or a steroid hormone?
i. steroid hormone receptor (SHR)ii. chaperone
iii. steroid hormone response element (HRE)iv. second messenger
v. cAMP and adenylate cyclase
d. How can the same steroid hormone simultaneously activate distinct patterns of gene expression in two different cell types and have no effect on a third cell type?