curÂ·renÂ·cy. (kÃ»râ²Én-sÄ, kÅ­râ²-) n. pl. curÂ·renÂ·cies. 1. Money in any form when in actual use as a medium of exchange, especially circulating paper money. 2. Transmission from person to person as a medium of exchange; circulation: coins now in currency. 3. General acceptance or use; prevalence: the currency of a slang term.
(T/F) Most hormones can be classified chemically as either amino-acid based or steroids. True. Most hormones belong to the amino-acid group, while others (steroids) are derived from cholesterol.
Hormones are a kind of biochemical messengers. Most hormones are chemical substances produced by specialized tissue formations called endocrine glands. The substances are secr â¦ eted directly into the bloodstream, other body fluids, or into adjacent tissues.The purpose of hormones is to regulate metabolic activity of some other organs or tissues of the body.pinephrine and norepinephrine are the two hormones secreted by the  adrenal medulla. These adrenal hormones are classified as  catecholamine's which are chemical compounds â¦ made in the body from  the amino acid tyrosine.