The amino acid $Tryptophan$ is a precursor for the synthesis of which of the following?

  • A
    $Thyroxine$ and $Triiodothyronine$
  • B
    $Estrogen$ and $Progesterone$
  • C
    $Cortisol$ and $Cortisone$
  • D
    $Melatonin$ and $Serotonin$

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Identify the incorrect pair:

Which of the following chemical substances is different from the others in its biological category?

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

List the hormones secreted by the following:
$(a)$ Hypothalamus $(b)$ Pituitary $(c)$ Thyroid $(d)$ Parathyroid $(e)$ Adrenal $(f)$ Pancreas $(g)$ Testis $(h)$ Ovary $(i)$ Thymus $(j)$ Atrium $(k)$ Kidney

Which of the following is an artificial insulin?

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