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Subjects
Science CBSE
Class 9
Why do we fall ill?
Textbook questions
12.
Short answer questions III
Exercise condition:
3
m.
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
Treponema pallidum
Helicobacter pylori
Mycobacterium tuberculosis
b
. Who was the first person to discover the pathogen that causes peptic ulcers?
Schleiden & Schwann
Robert Brown and Robert Hooke
Barry J. Marshall and Robin Warren
Antoine Lavoisier
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