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: Microbiology
Which organism can penetrate intact cornea: September 2009 
Select and explain. 
A. Pneumococcus, B. Gonococci, C. Pseudomonas, D. Staphylococci
B: Gonococci
Answer: B: Gonococci 
Explanation: Ans. B: Gonococci Organisms that penetrate intact epithelium: Corynebacterium (Diptheria)-a nonencapsulated, nonmotile, gram-positive bacillus Acanthamoeba Neisseria gonorrhoea Aegyptius Listeria Shigella