A urease test is used to identify Myobacterium tuberculosis because urease is a sign of tuberculosis. Thus, the correct option is A.
Mycobacterium tuberculosis is the bacteria that causes tuberculosis (TB). It is disseminated when a person with active tuberculosis in their lungs coughs or sneezes and someone else inhales the TB bacteria-laden droplets.
The lack of urease enzymes in humans makes urease-based diagnostics appealing. As a result, the presence of urease enzyme activity in humans indicates the presence of a urease-positive microbial pathogen or commensal.
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