The term steroid describes both hormones produced by the body and artificially produced medications that duplicate the action for the naturally
occurring steroids. All of the following describe steroid hormones EXCEPT?
O They bind with receptor proteins in the plasma membrane to trigger cellular
responses.
O They are derived from cholesterol and are lipid soluble.
O They serve as messengers in hormone signaling pathways.
O They are exemplified by testosterone, estrogen and progesterone.