Short answer questions III — task. Science CBSE, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Which bacterium causes peptic ulcers? Who discovered the above pathogen for the first time?

a. Which of the following is the causative agent of peptic ulcer?

Streptococcus pyogenes
Helicobacter pylori
Treponema pallidum
Mycobacterium tuberculosis

b. Who was the first person to discover the pathogen that causes peptic ulcers?

Barry J. Marshall and Robin Warren
Antoine Lavoisier
Robert Brown and Robert Hooke
Schleiden & Schwann

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