<prompt> Hormone synthesized as peptide precursor isare:InsulinPTHReninAll  <response>: All - A, B, C,- Sterod hormones are synthesized from cholesterolQ and example includes adrenocoical hormones i.e. coisol aldosteroneQ, sex hormones i.e. testosterone, estrogen progesteroneQ and vitamin D3 1, 25- OH2 cholecalciferol a secosteroid because one of the rings of steroid nucleus , the B ring, is open- Amine hormones are derived from aminoacid tyrosine and examples include catecholamines adrenalineepinephrine and noradrenalinenor epinephrineQ from adrenal medulla, thyroid hormones triiodothyronine T3, tetraiodothyronine T4 thyroxineQ and prolactin inhibiting factor PIF dopamine from hypothalamus.- All remaining hormones are either low molecular weight proteins i.e. poly peptides or glycoproteins. They are synthesized initially as larger peptide precursorQ eg prepro-insulin and then cleaved off until the final smaller active molecule is produced. Some are also coupled with carbohydrates to form glycoproteins.A, B, C, 