This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
Lipoprotein A resembles: 
Select and explain. 
A. Plasminogen, B. Plasmin, C. Thrombin, D. Prothrombin
A: Plasminogen
Answer: A: Plasminogen 
Explanation: Ans. A. Plasminogen(Ref: Chatterjea and Shinde 8/e page 448)LpaAlmost silmilar to LDL.Apo (a) is attached to apo B100 by disulphide bond.Major site of clearance of Lp(a) is liver.Strongly associated with Atherosclerosis and myocardial infarction.Apo A has significant homology with plasminogenQ.It interferes with activation of plasminogen to plasmin,Hence fibrin clot is not lysed.Susceptible to Intravascular thrombosis.