How many of these hormones are water soluble ? Thyroxine, Epinephrine, Nor-epinephrine , Aldosterone, Cortisol, Testosterone, Thymosin, Melatonin, Calcitonin

The correct option is A 5

• Water-soluble hormones include glycoproteins, catecholamines, and peptide hormones composed of polypeptides. Receptors for peptide hormones are located on the plasma membrane because they have bound to a receptor protein located on the plasma membrane.
  
• Thyroxine, Aldosterone, Cortisol, Testosterone are lipid soluble hormones.
  
• Epinephrine, Non-epinephrine, Thymosin, Melatonin and Calcitonin are water-soluble hormones.
  

Hence, the correct answer is '5'.