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Which of the following is the proper procedure for performing a test for lactose tolerance? 

          Which of the following is the proper procedure for performing a test for lactose tolerance?

Added by Jeffrey D.

Psychology Openstax
Psychology Openstax
Rosie M. Spielman 1st Edition
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Which of the following is the proper procedure for performing a test for lactose tolerance?
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Transcript

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00:01 The key one question is what would be a good negative control in the lactose experiment? the water added to the milk serve as a negative control.
00:12 Sir as negative control, water does not contain any lactose.
00:23 So it should not produce any glucose when combined with the milk.
00:26 If a student detected glucose during this step, it suggests that something went wrong.
00:30 For example, the water was contaminated.
00:33 The test strips were not working or there was an error in the procedure.
00:36 In the negative control, the negative control, the lack zy -a genes are switch of pipe repressor when the inducer is absent, that is signaling in an absence of lactose...
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