Q.
Given below is a schematic representation of the mechanism of hormone action. Select the set of hormones which can bind with Y.
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NTA AbhyasNTA Abhyas 2020Chemical Coordination and Integration
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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 (for peptide hormones) and the receptors present inside the target cell (for steroid and amino derived hormones) 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. Testosterone, estrogen are steroidal hormones which can cross through the plasma membrane, reach DNA in the nucleus and directly stimulate transcription.
