You treat some cancer cells with a new therapeutic that you hope will kill them. You run an MTT assay on the results and notice that the sample from the control cells (not treated with drug) turns purple upon addition of the MTT and the sample from the cells treated your drug are clear after adding MTT. As you walk down the hall to run your sample on the spectrophotometer, how are you feeling? (a) frustrated, (b) unsure, (c) excited. I understand that if the cell are alive, they will have functioning mitochondria, the mitochondria will be producing NADH and NADPH which will allow some enzymes in the cell to convert empty T which is colorless, into a colored form as and die. The colorelss means less dye with present, which means the less empty T was converted, meaning that we had less mitochondrial activity, which means we had less live cells. I think that the answer should be (a) frustrated.  I am not sure if I am right. Glad if the expert advise.

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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You treat some cancer cells with a new therapeutic that you hope will kill them. You run an MTT assay on the results and notice that the sample from the control cells (not treated with drug) turns purple upon addition of the MTT and the sample from the cells treated your drug are clear after adding MTT. As you walk down the hall to run your sample on the spectrophotometer, how are you feeling? (a) frustrated, (b) unsure, (c) excited.

I understand that if the cell are alive, they will have functioning mitochondria, the mitochondria will be producing NADH and NADPH which will allow some enzymes in the cell to convert empty T which is colorless, into a colored form as and die. The colorelss means less dye with present, which means the less empty T was converted, meaning that we had less mitochondrial activity, which means we had less live cells. I think that the answer should be (a) frustrated. 

I am not sure if I am right. Glad if the expert advise.

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