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- How to prepare %25 100 ml Glucose solution?Consider a crude extract with a mixture of the 5 proteins listed below. Protein A 4.5 pl 160 molecular weight, kDa Protein B 12.5 pl and 65 molecular weight Protein C 5.0 pl, 15 molecular weight Protein D 6.8 pl, 150 molecular weight Protein E 9.5 pl, 45 molecular weight You load this protein mixture onto an anion exchange column at pH 11. Next, you apply a "washing" step by passing through buffer at pH 11. Finally, for your elution step, you apply a pH gradient starting from pH 11 to pH 2.0 (A gradient buffer system allows you to gradually and continuously change the pH of your mobile phase starting from pH 11 up to pH 2). You load this same protein mixture onto a Size Exclusion column. Please indicate the order in which these proteins will elute for both. Group of answer choices Yes or No, please explain your answer. If your protein of interest is protein A, would using anion exchange column be completely successful at separating it from all the other proteins? Group of answer…give two disadvantages to using the biuret reaction to measure protein concentration compared to measuring the protein absorbance directly at 280 nm.
- Given a stock protein solution with a concentration of 6 mg/ml, determine the protein concentration of a solution made by mixing 5 μl of the stock with 5 μl of a buffer.What is the practical advantage of the approximate red cell suspension over the exact red cell suspension?Instead of Molisch's test, what specific test can be used to detect the presence of pentose sugar?
- How much nystatin stock (50 mg/mL) needs to be added to 15 mL of tryptic soy agar to give a final concentration of 50 μg/mL?Give two advantages to using the biuret reaction to measure protein concentration compared to measuring the protein absorbance directly at 280 nm.What is the difference of measuring proteins through UV-VIS spectroscopy at 280 nm and at 595 nm with the presence of the Bradford reagent? (note: explain not less than 5 sentences).
- What is the difference between agarose gels and polyacrylamide gels?Upon doing the experiment of Protein Denaturation, what could be observed in the precipitation of organic solvents if ethyl alcohol is added to an albumin solution in a test tube? What color can be observed?Answer the following questions about protein concentration determination. a) At what wavelength should an albumin protein solution placed in a quartz cuvette be measured in the spectrophotometer? Why is that? b) With which methods other than spectrophotometer can the amount of protein be measured quantitatively?