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
Substance present in both serum and plasma:September 2007 
Select and explain. 
A. Fibrinogen, B. Factor II, C. Factor VII, D. Factor V
C: Factor VII
Answer: C: Factor VII 
Explanation: Ans. C: Factor VIISerum has essentially the same composition as that of plasma except that its fibrinogen and clotting factors II,V and VIII has been removed and it has a higher seroton in content.