For hormones that homeostatically regulate cellular functions, A) ...

[sammy]

For hormones that homeostatically regulate cellular functions,
A) negative feedback typically regulates hormone secretion.
B) the circulating level of a hormone is held constant through a series of positive feedback loops.
C) both lipid-soluble hormones and water-soluble hormones bind to intracellular protein receptors.
D) endocrine organs release their contents into the bloodstream via specialized ducts.
E) it is impossible to also have neural regulation of that system.

[penguins]

For sure it has to be A Mark as solved once you're done!

[sammy]

Beauty! You were right on this one again