Quality control is set up on a new lot of an indole reagent.Clostridium bifermentans and Clostridium bolteae are used,and the following results are obtained:
· C)bifermentans: positive
· C)bolteae: negative
Which one of the following statements explains this discrepancy?
A)The reagent is most likely expired.
B)The incubation time is most likely abbreviated.
C)These two organisms are poor choices;both are indole-positive.
D)No discrepancy is present.The results obtained are correct.

Question

Quizplus · Accepted Answer

C.bifermentans and C.bolteae are positive and negative for indole,respectively;therefore the results are accurate,and the new lot is validated.

Quality Control Is Set Up on a New Lot of an Indole