are peptide hormones lipophilic
1 Hormone. 2  can be either hydrophilic (polypeptide hormone) or lipophilic (steroid) biogenic amines can be either. 3  binds specific receptor on cell surface (hydrophilic hormones) or inside cell (lipophilic hormones). 4  lipophilic hormones bind carrier proteins to travel in circulation; hydrophilic hormones travel freely.efinitions. 1  Hormone. 2  can be either hydrophilic (polypeptide hormone) or lipophilic (steroid) biogenic amines can be either. 3  binds specific receptor on cell surface (hydrophilic hormones) or inside cell (lipophilic hormones).