You detected a mixture in one of your evidence samples. Determine the donor ratio for the two contributors in the following two-person mixture. (Assume that each contributor has a PHR >50%.) D1S1656 175 11 864 12 904 16 3113 Donor Ratio = [DR] 18.3 3013
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- Using 10 μL of a patient's serum, how much diluent would be needed to create a 1:10 dilution? ______ μLYou obtained the following raw data when setting up a Bradford standard curve: BSA (mg/ml) Absorbancy 595nm 0 0.225 1 0.310 2 0.420 3 0.510 4 0.610 5 0.720 6 0.810 7 0.915 8 0.950 9 0.980 10 0.990 Set up a standard curve. What would the quality of the line-fit (R2 value) be if you do not exclude experimental outliers? (Give you answer to 4 decimal places) Answer Skip ExitYou are asked to design three buffers of the following pH values: 9.10, 10.45, and 4.65. You have the following 0.10M solutions available: CH3COOH, CH3COONa, NH4Cl, NH3, NaHCO3, and Na2CO3.Which solution will you choose to design each buffer?pH 4.65 ___________________________________________________ pH 9.10 ___________________________________________________ pH 10.45 __________________________________________________
- Calculate the amount of phycocyanin in Sample 1 in mg where A620=0.204 and A650=0.061, taking into account the dilution factor as per question 6, and the total volume of extract as per question 4. Note your answer to 2 decimal places Sample 1 Total Extract Volume (ml) is 45 Dilution factor is 100 A280 is 1.07 A620 is 0.221 A650 is 00.97 Specific Absorbance Ratio (SAR) A620/A280 is 0.206How many moles of Na2S2O3 would be required to react completely with 0.450 g of AgBr?Given the equation of the line, y=150x-8.1221 (cells per mL is in 10^8), what is the CFU per mL of the original suspension if the thousand-fold dilution of that suspension has an absorbance of 0.3 at 600nm? * A. 3.7 x 10^12 B. 3.7 x 10^9 C. 3.7 x 10^1 D. None of these is correct
- Five identical biood samples were analyzed to deterttmine cholesterol level in a patient The feilwing values were ohtained 157, 154, 155, 152, 155. Calculate the standand enor of the mean (SEM) fo thee dataWhen a SBIA021 student measured the pH of 1.0M HCI, the student obtained a pH meter and failed to neither check the condition nor the manner of usage of the instrument. The pH meter reading timed out (Did not give a reading) Which of the following problem explanations is most correct? A)The sample in the glass beaker was being swirled vigourously while the electrode was submerged in it for a reading. B)The electrode got submerged much deeper into the solution than it should have. C)All of the above are correct problem explanations O D)The electrode had long direct contact with the environment and the glass membrane got dry.If the pH of human blood becomes higher than the average pH of 7.4, what must have occurred and what can be done to bring the blood pH back to normal? 1) H+may have been added and buffers may bring it back to hormal. 2) OH- may have been added to the sample and adding more OH may bring it back to normal. 3) H+may have been added and adding more H* may bring it back to normal. 4) OH- may have been added to the sample, and a buffer may bring it back to normal. pick 1 out of the 4 options