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: Pathology
Receptors of LDL is/are - 
Select and explain. 
A. B 100, B. B 48, C. APO Al, D. APO A 1 1
A: B 100
Answer: A: B 100 
Explanation: Ans. is 'a' i.e., B 100Apo B-100 acts as a ligand for binding to LDL receptor.Also knowApo E in IDL acts as ligand for LDL receptor mediated endocytosis of IDL and chylomicron remnants. So, Ligand for LDL receptors are :(i) APO B-100 (for LDL)(ii) APO E (for IDL & Chylomicron remnants)