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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 19. Chemical coordination and integration4 Marks
MCQ
Steroid hormones work as
  • ✓
    They enter into target cells and binds with specific receptor and activates specific genes to form protein
  • B
    They binds to cell membrane
  • C
    They catalyze formation of $cAMP$
  • D
    None of the above
✓

Answer

Correct option: A.
They enter into target cells and binds with specific receptor and activates specific genes to form protein
a
Steroid hormones are lipid soluble. So they can pass freely across the lipid bilayer of plasma membrane. After getting entrance into cytoplasm, molecules of steroids hormones bind to receptor molecules, located within the cytoplasm of target cell and thus a hormone receptor complex is formed. Now, this complex moves into the nucleus of the cell and activates specific gene that ultimately produce specific proteins.

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