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1. Explain why Phenol Red Lactose broth tubes are used for Water Quality testing. 2. A. What...

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Biology

1. Explain why Phenol Red Lactose broth tubes are used for WaterQuality testing.

2. A. What does it mean if a water quality analysis returns apositive result for the presence of E. coli? B. What is the meaningof the term indicator organism?

5. Early Monday morning you collect a water sample from a localbeach. You set up an MPN test with the water sample, using one tubefor each dilution. After the correct incubation time, you examinethe tubes and discover positive results in the 1 ml tube, but the10 ml and 0.1 ml tubes are negative.

A. Should the beach be opened? Explain your answer.

B. What could have caused the results you obtained? Bespecific.

Answer & Explanation Solved by verified expert
3.6 Ratings (544 Votes)
1 Water is an important component on earth so it need to be in a pure form presence of pathogenic bacteria in the water can be tested using of phenol red lactose broth medium This is a method which used to identify the microorganisms in the water Who is supplier of carbon nitrogen source which is used for    See Answer
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