is thyroid lipid or water soluble
View Full Document. Bound to a lipid-soluble carrier b. Free in an unbound, water-soluble form c. Bound to a water solubleÃbinding protein d. Free because of their lipid-soluble chemistry ANS: B Peptide or protein hormones, such as insulin, pituitary, hypothalamic, and parathyroid, are wa- ter soluble and circulate in free (unbound) forms.