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.
11Chapter 1 Characteristics of chemical messengers Hormones are chemical messengers Hormones are signalling molecules synthesized within the body that regulate andcoordinate physiological and metabolic functions by acting on receptors located on or intarget cells.1Chapter 1 Characteristics of chemical messengers Hormones are chemical messengers Hormones are signalling molecules synthesized within the body that regulate andcoordinate physiological and metabolic functions by acting on receptors located on or intarget cells.