Opacity around colonies of Clostridium perfringens is due to_________________?

Related Mcqs:

The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?

A. Conjugation B. Rarefaction C. Transduction D. Transformation...

Vibrio cholera was discovered by_________________?

A. Koch B. Medintoff C. John snow D. Virchow...

Test for differentiating virulent form non-virulent tubercular bacilli_____________?

A. Aryl sulphatase test B. Niacin test C. Neutral red test D. Catalase peroxidase test...

Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?

A. Cocci B. Spirochetes C. Bacteriophages D. Filamentous rods...

The most primitive mode of gene transfer occurs by____________?

A. Transduction B. Translation C. Cell fusion D. Conjugation...