NEETZoologyChemical Coordination and Integration
What are membrane-bound receptors?
Options
- AReceptors present inside the target cell
- BReceptors present in the nucleus
- CReceptors present on the cell membrane of the target cells
- DReceptors not specific to hormones
Correct answer
C. Receptors present on the cell membrane of the target cells
Step-by-step solution
Hormones produce their effects on target tissues by binding to specific proteins called hormone receptors located in the target tissues only. Hormone receptors present on the cell membrane of the target cells are called membrane-bound receptors and the receptors present inside the target cell are called intracellular receptors, mostly nuclear receptors (present in the nucleus). Binding of a hormone to its receptor leads to the formation of a hormone-receptor complex (Figure 19.5 a, b). Each receptor is specific to