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STD 11 - 19. Chemical coordination and integration — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 19. Chemical coordination and integration1 Mark
MCQ
Which of the following forms a hormone receptor complex on the cell membrane?
  • A
    Cortisol
  • B
    Testosterone
  • ✓
    Insulin
  • D
    Progesterone
✓

Answer

Correct option: C.
Insulin
c
Water soluble hormones do not cross the cell membrane. They bind to the extracellular receptors which generates second messengers such as $Ca^{2+}, CAMP, IP_3$ etc. This further activates the existing enzyme system of the cell and accelerates the biochemical reaction in the cell.

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