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Question
Escherichia coli present in human colon is
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Solution
The correct option is A Commensal
Escherichia coli are Gram-negative, facultative aerobic bacteria. They are common inhabitant of human intestines. These strains of E. coli are harmless. They form the part of the normal microbiota of the colon. They live in symbiotic association. They are called as commensals. They benefit hosts by producing vitamin K2 and preventing colonization of the intestine with pathogenic bacteria.Thus, the correct answer is 'Commensal.'
Escherichia coli are Gram-negative, facultative aerobic bacteria. They are common inhabitant of human intestines. These strains of E. coli are harmless. They form the part of the normal microbiota of the colon. They live in symbiotic association. They are called as commensals. They benefit hosts by producing vitamin K2 and preventing colonization of the intestine with pathogenic bacteria.
Thus, the correct answer is 'Commensal.'
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