Which of the following is a water-soluble hormone consisting of $32$ amino acids?

Which of the following radioactive isotopes is used to detect thyroid cancer?

Iodine deficiency causes:

Hyposecretion of which hormone is responsible for cretinism?

Which disease in adults is characterized by the following symptoms: $1.$ Low metabolic rate,$2.$ Increase in body weight,$3.$ Water retention in tissues?

Which of the following diseases results from an endocrine disorder?