microbiology chapter 11 test bank

A man is ill with a protozoan disease characterized by cerebral affection and loss of sight. Blood analysis revealed halfmoon-shaped unicellular organisms with pointed ends. This disease is caused by:

Choose which one fo the following microorganisms is an example of obligate parasitism

A vaginal yeast infection is typically caused by:

A veterenary attendant working at a cattle farm complains of joint pain, fever, indisposition and sweating at nighttime that he has been experiencing for a month. Giving the regard to such presentations and occupational history the doctor suspected brucellosis. What material taken from this patient is to be analyzed in a common microbiological laboratory?

A patient with a sore throat and fever had a throat culture revealing Gram-positive cocci in chains. The bacteria were catalase-negative. What is the most likely causative agent?