Multiple choice

Which of the following is not a steroid?

  1. Testosterone

  2. Oestradiol-17B

  3. Progesterone

  4. Prolactin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prolactin is a peptide hormone produced by the anterior pituitary gland that stimulates milk production. Testosterone, oestradiol-17B, and progesterone are all steroid hormones derived from cholesterol, characterized by their four-ring structure. Steroid hormones include sex hormones (androgens, estrogens, progestins) and corticosteroids.

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