This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: A.N.S., Subject name: Pharmacology
Which of the following is slowest acting receptor? 
Select and explain. 
A. Beta 1 receptor, B. M2 receptor, C. Tyrosine kinase receptor, D. Mineralocorticoid receptor
D: Mineralocorticoid receptor
Answer: D: Mineralocorticoid receptor 
Explanation: Ans. D. Mineralocorticoid receptora. Nuclear receptor are the slowest acting receptors.b. The only nuclear receptor in the options is mineralocorticoid receptors.