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
Staphylococcus aureus is a normal inhabitant of: March 2005 
Select and explain. 
A. Throat, B. Nose, C. Skin, D. GIT
B: Nose
Answer: B: Nose 
Explanation: Ans. B: Nose Staphylococci are Gram-positive spherical bacteria. S. aureus colonizes mainly the nasal passages(especially anterior pares), but it may be found regularly in most other anatomical locales. S. epidermidis is an inhabitant of the skin.