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: Biochemistry
Function of LCAT is: 
Select and explain. 
A. Helps in cholesterol synthesis, B. Conves cholesterol to cholesterol ester, C. Helps in formation of chylomicrons, D. All of the above
B: Conves cholesterol to cholesterol ester
Answer: B: Conves cholesterol to cholesterol ester 
Explanation: The cholesterol (cholesteryl) ester forms an integral pa of HDLThe cholesterol from the peripheral tissues is trapped in HDL by a reaction catalyzed by LCATLecithin-cholesterol acyltransferase/ LCAT/ Phosphatidylcholine-sterol 0-acyltransferaseIt conves free cholesterol into cholesteryl ester (a more hydrophobic form of cholesterol)Which is then sequestered into the core of a lipoprotein paicle, eventually making the newly synthesized HDL spherical and forcing the reaction to become unidirectional since the paicles are removed from the surface.The enzyme is bound to high-density lipoproteins (HDLs) and low-density lipoproteins in the blood plasma