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: Physiology
[{'content': 'Iron binding protein is: September 2010 \nSelect and explain. \nA. Ferritin, B. Ferropoin 1, C. Transferrin, D. Hephaestin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: TransferrinIron-binding proteins are carrier proteins and metalloproteins which play many impoant roles in metabolism. They bind Iron and can therefore inhibit microbial growth.Two iron-binding proteins are lactoferrin and transferrin.Some of the iron after absorption is stored in ferritin, and the remainder is transpoed out of the enterocytes by a transpoer named ferropoin 1. Hephaestin is associated with ferropoin 1.', 'role': 'assistant'}]