This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Drugs interact with their receptor sites by forming? 
Select and explain. 
A. Coardinate covalent bonds, B. Covalent bonds, C. Ionic bonds, D. Van der wall forces with basic drugs only
C: Ionic bonds
Answer: C: Ionic bonds 
Explanation: Ans. is 'c' i.e., Ionic bonds Drug interact with receptors by means of chemical bonds. o These are of three major types: i) Electrostatic (Ionic) more common ii) Covalent Hydrophobic