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Question
Which one among the following is a non pathogenic bacterium, present in colon?
Which one among the following is a non pathogenic bacterium, present in colon?
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Solution
The correct option is D Escherichia coli
Escherichia coli are Gram-negative, facultative aerobic bacteria. They are common inhabitant of human colon. These strains of E. coli are harmless or non pathogenic. They form the part of the normal microbiota of the intestine. They live in symbiotic association. They benefit hosts by producing vitamin K2 and preventing colonization of the intestine with pathogenic bacteria.Thus, the correct answer is 'Escherichia coli.'
Escherichia coli are Gram-negative, facultative aerobic bacteria. They are common inhabitant of human colon. These strains of E. coli are harmless or non pathogenic. They form the part of the normal microbiota of the intestine. They live in symbiotic association. They benefit hosts by producing vitamin K2 and preventing colonization of the intestine with pathogenic bacteria.
Thus, the correct answer is 'Escherichia coli.'
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