NEET2019ZoologyChemical Coordination and IntegrationActual
Identify A, B and C in the diagrammatic representation of the mechanism of hormone action. Select the correct option from the following
Options
- AA-Steroid hormone; B -Hormone-receptor complex, C-Protein
- BA-Protein hormone, B-Receptor; C-Cyclic AMP
- CA-Steroid hormone; B -Receptor, C -Second messenger
- DA-Protein hormone; B-Cyclic AMP, C-Homone-receptor complex
Correct answer
B. A-Protein hormone, B-Receptor; C-Cyclic AMP
Step-by-step solution
In the given mechanism of hormone action, the labels are A-Protein hormone, B-Receptor, C-Cyclic AMP Hormones which interact with membrane bound receptors do not enter the target cell. These bind with membrane proteins (receptors) and generate second messengers which in turn regulate cellular metabolism, e.g. FSH on ovarian cell membrane.