The Escherichia cells in a human excreta number in:
Correct answer: C. Billion
- A. Thousands
- B. Hundreds
- C. Billion
- D. Millions
Explanation
Human faeces contain Escherichia coli in very large numbers, commonly expressed as billions of cells per gram or millilitre of excreta. This abundance makes E. coli useful as an indicator of faecal contamination.
Written and checked by Zahid Hussain, editorLast updated
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