A hormone reaches many tissues in the bloodstream, but only some cells respond. What allows a target cell to respond to that hormone?
Correct answer: A. The cell contains a matching hormone receptor
- A. The cell contains a matching hormone receptor
- B. The cell receives a larger blood supply
- C. The cell contains more mitochondria
- D. The cell has a thicker plasma membrane
Explanation
A target cell has a receptor with a shape that matches the hormone, allowing a specific response. Blood supply and cell structure may affect general cell activity, but they do not determine hormone specificity.
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About Endocrine System
The endocrine system covers hormone-producing glands including the pituitary, thyroid, parathyroids, adrenals, pancreas, pineal gland, ovaries and testes. It explains hormone classes, target-cell responses, feedback control, and the functions of hormones such as insulin, thyroxine, cortisol, growth hormone and ADH, which is often confused with a kidney-produced substance.
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