This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry
Which of the following protein binds to free heme? 
Select and explain. 
A. Ceruloplasmin, B. Haptoglobin, C. Hemopexin, D. Hemosiderin
C: Hemopexin
Answer: C: Hemopexin 
Explanation: Ans: c) Hemopexin Option analysis: Binding protein Ceruloplasmin is a copper containing protein Haptoglobin Free Haemoglobin Hemosiderin Denatured ferritin Hemopexin is a b1-globulin that binds free heme