The electrophoretic mobility of a protein in urea PAGE decreases due to (a) Decrease in charge (b) Increase in hydrodynamic volume (c) Increase in charge (d) Decrease in hydrodynamic volume

Briefly describe what each of the following tells you about the characteristics of the proteins ofinterest described in the statement (Note: The protein is not the same one in each statement):(a) When subjected to dialysis using tubing with a molecular mass cutoff of 3,000 Da, a protein ofinterest is found in the retentate;(b) When subjected to ultrafiltration using a membrane with a molecular mass cutoff of 10,000 Da,a protein of interest is found in the filtrate;(c) When the protein was subjected to ion-exchange chromatography using an anion-exchangecolumn and a buffer of pH 8.0, a protein of interest was bound to the column;(d) When a protein of interest was subjected to isoelectric focusing, the protein migrated to aposition of approximately pH 7.2 in the pH gradient of the gel;(e) When a protein of interest was subjected to SDS-PAGE in both the presence and absence ofmercaptoethanol, the protein appeared as three bands at molecular mass 42,000, 45,000, and48,000 Da;(f) When a solution with various proteins was heated to 60 °C, the protein of interest was found inthe precipitate obtained upon centrifugation of the solution

Which change in solution composition would cause a protein to elute from a hydrophobic interaction column?A.Decreasing pHB.Increasing pHC.Decreasing salt concentrationD.Increasing salt concentration

A protein was eluted at 15 ml when passed through a gel filtration column with a void volume of 5 ml and a pore volume of 1 ml. The Kd value of the protein is

ADH does what to urine volume?Multiple choice question.DecreasesIncreases

Which of the following occurs to allow the kidneys to form concentrated urine?*1 pointA lot of NaCI is secreted at the ascending limb.A lot of NaCI is reabsorbed at the descending limb.A lot of water is reabsorbed at the descending limb.A lot of water is reabsorbed at the proximal convoluted tubule.