This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
Two paicle with same size, the one which easily passes through glomeruli has 
Select and explain. 
A. Positive charge, B. Negative charge, C. Charge has no relation, D. More density
A: Positive charge
Answer: A: Positive charge 
Explanation: Positively charged paicles passes easily through glomeruli because glomeruli basement membrane has many anionic sites. Ref: guyton and hall textbook of medical physiology 12 edition page number:470,471,472