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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).
Hormones can be classified into following three groups on the basis of their chemical structure: i. Amino acid derivatives ii. Peptide hormones iii. Lipid derivatives AMINO ACID DERIVATIVES Amino acid derivatives are relatively small molecules that are structurally similar to amino acids, the building blocks of proteins.