Who discovered the peptic ulcer causing bacteria H.PYLORI?

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1. Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture_____________?

   A. Robert Koch B. Louis Pasteur C. Alexander Fleming D. Leeuwenhoek...

2. Smallest disease causing agents in plants are ?

   A. virion B. mycoplasma C. viroids D. prions...

3. The agent of controversial nature causing mad cow infection is_____________?

   A. Bacteria B. Cowpox Virus C. Adenovirus D. Prion...

4. E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is____________?

   A. 0.1-600 um B. 100-200 nm C. 1.1-1.5 um (width) 2.0-6.0 um (length) D. 0.75-1.25 um...

5. Term the time during which an orgnism is present in the body before causing disease ?

   A. Rest period B. Incubation period C. Sleeping period D. Inclubation time Submitted by: Farhan Rana...

6. Nodules on roots of leguminous plants have __________ bacteria?

   A. Anaerobic B. Nitrogen fixing C. Nitrifying D. Ammonifying...

7. Approximately _____ species of bacteria are known to cause diseases in humans.

   A. 100 B. 200 C. 300 D. 400...

8. Some bacteria ranging occasionally a size of 500 ?m in length are___________________?

   A. Escherichia coli B. Spirochetes C. Mycoplasma D. Epulopiscuim...

9. Nitrifying bacteria are the examples of___________?

   A. Hetrotrophic bacteria B. Chemosynthetic bacteria C. Saprophytic bacteria D. Parasitic bacteria...

10. Which of the following bacteria do not have flagella commonly__________?

    A. Cocci B. Bacilli C. Streptobacilli D. Vibrio...