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Get Full Access to Essentials Of Probability & Statistics For Engineers & Scientists - 1 Edition - Chapter 8 - Problem 8.5
Get Full Access to Essentials Of Probability & Statistics For Engineers & Scientists - 1 Edition - Chapter 8 - Problem 8.5

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ISBN: 9780321783738 193

Solution for problem 8.5 Chapter 8

Essentials of Probability & Statistics for Engineers & Scientists | 1st Edition

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Problem 8.5

The mitochondrial enzyme NADPH:NAD transhydrogenase of the common rat tapeworm (Hymenolepiasis diminuta) catalyzes hydrogen in the transfer from NADPH to NAD, producing NADH. This enzyme is known to serve a vital role in the tapeworms anaerobic metabolism, and it has recently been hypothesized that it may serve as a proton exchange pump, transferring protons across the mitochondrial membrane. A study on Effect of Various Substrate Concentrations on the Conformational Variation of the NADPH:NAD Transhydrogenase of Hymenolepiasis diminuta, conducted at Bowling Green State University, was designed to assess the ability of this enzyme to undergo conformation or shape changes. Changes in the specific activity of the enzyme caused by variations in the concentration of NADP could be interpreted as supporting the theory of conformational change. The enzyme in question is located in the inner membrane of the tapeworms mitochondria. Tapeworms were homogenized, and through a series of centrifugations, the enzyme was isolated. Various concentrations of NADP were then added to the isolated enzyme solution, and the mixture was then incubated in a water bath at 56C for 3 minutes. The enzyme was then analyzed on a dual-beam spectrophotometer, and the results shown were calculated, with the specific activity of the enzyme given in nanomoles per minute per milligram of protein. Test the hypothesis at the 0.01 level that the average specific activity is the same for the four concentrations. NADP Concentration (nm) 0 80 160 360 11.01 11.38 11.02 6.04 10.31 12.09 10.67 10.67 8.65 8.30 10.55 12.33 11.50 7.76 9.48 11.26 10.08 10.31 10.13 8.89 9.36

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