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Name one organism that you found to be particularly interesting and tell me why you found it interesting. 

In order to concentrate a stool specimen when looking for parasites, you can choose either a sedimentation or floatation method.  What is the scientific principle used in both methods?  ( 19.2)

Should specimens be collected for culture before, during, or after antibiotics have been administered?  (1.16)

Pathogenic Shigella species are clear/green on Hektoen-enteric agar. (7.3)

What is the purpose of thioglycolate in media? (2.8)

A six-year-old child complains of an itchy anus, especially at night, and abdominal pain. The following is seen on a scotch-tape test. What is the causative agent?  (19.3)

Is it possible for bacteria classified as nonfermentors to use glucose in the presence of oxygen?  If so, what is a further classification of those organisms?  (9.2)

The main bacterial cell shapes include all of the following EXCEPT:  (1.5)

Intracellular, gram-negative diplococci found in a direct smear of a genital specimen from either a man or a woman is diagnostic for Neisseria gonorrhoeae. (3.4) 

Which test distinguishes Staphylococcus from Micrococcus?  (4.8)