microbiology Mcqs
501. The causative organism of syphilis is___________?
comments icon0

A. Borrelia burgolorferi

B. Leptospira interrogans

C. Treponema pallidum

D. Chalamydia trachomatis

502. In small intestine, cholera toxin acts by______________?
comments icon0
A. ADP ribosylation of the G regulatory protein

B. Activation of GTPase

C. Inhibition of adenyl cyclase

D. Active absorption of NaCI