Question

1 QUESTIONS Suppose you ran this test with Providencia stuartii but it took 48 hours to turn pink. a. Do you think this is a false result? b. If so, is it a false positive or a false negative? If not, why not? Give some possible reasons for this occurrence. 2 Explain why it is acceptable to record positive tests before the suggested incubation time is completed but it is not acceptable to record a negative result early.

          1 QUESTIONS
Suppose you ran this test with Providencia stuartii but it took 48 hours to turn pink.
a. Do you think this is a false result?
b. If so, is it a false positive or a false negative? If not, why not? Give some possible reasons for this occurrence.
2 Explain why it is acceptable to record positive tests before the suggested incubation time is completed but it is not acceptable to record a negative result early.

1 QUESTIONS
Suppose you ran this test with Providencia stuartii but it took 48 hours to turn pink.
a. Do you think this is a false result?
b. If so, is it a false positive or a false negative? If not, why not? Give some possible reasons for this occurrence.
2 Explain why it is acceptable to record positive tests before the suggested incubation time is completed but it is not acceptable to record a negative result early.

Added by Carly S.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Adi S

09/20/2022

Step 1

The test result is not necessarily false. Providencia stuartii is a species of bacteria that is capable of fermenting lactose, which would cause a pink color change in a lactose fermentation test. However, the time it takes for this color change to occur can vary Show more…

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Suppose you ran this test with Providencia stuartii, but it took 48 hours to turn pink. a. Do you think this is a false result? b. If so, is it a false positive or a false negative? If not, why not? Give some possible reasons for this occurrence.