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
All of the following are storage proteins, except? 
Select and explain. 
A. Ovalbumin, B. Ricin, C. Ferritin, D. Glutelin
B: Ricin
Answer: B: Ricin 
Explanation: Storage proteins are reserves of metal ions and amino acids. Found in plant seeds, egg whites and milk. Storage proteins are ovalbumin and glutelin. Ricin is a phytotoxin.