This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Pharmacology, Subject name: Pharmacology
Insulin act via which receptor: 
Select and explain. 
A. Ionotropic receptor, B. Enzymatic receptor, C. Metabotropic receptor, D. Nuclear receptor
B: Enzymatic receptor
Answer: B: Enzymatic receptor 
Explanation: Ans. B. Enzymatic receptorInsulin acts by stimulation of tyrosine kinase receptor which is type of enzymatic receptor. T3 and T4 act via nuclear receptor. GABA and NMDA are the ionotropic receptors.