Which region on the following Ramachandran Plot corresponds to the allowable region(s) for Gly -120 2 All of these regions are correct 3,4 1,2,3 3 3 1,3
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i submitted the question 3 time, once i got 1,3 another i got all regions and third i got 3,4, please write the correct answer
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- A 0.0284 M aqueous solution of lactic acid, HC3H5O3, a substance that accumulates in the blood and muscles during physical activity, is found to be 6.7% ionized. Determine the value of Ka for lactic acid.Which tests both result in a colorimetric change due to furfural complexation? Molisch's and Benedict's Molisch's and Seliwanoff's Seliwanoff's and Fehling's Benedict's and Barfoed'sPredict the diffusivity of human serum albumin at 293 K in water as a dilute solution and compare it with experimental data. Assume the following: The molecular weight of human serum albumin, MA= 72,300 kg/kmol The viscosity of water at 293 K is 0.897 x 10-3 Pa∙s The experimental data value is 5.93 x 10-11 m2/s.
- Using the data from the standard curve done previously, you record the absorbance of your extracted milk protein sample at 0.499 at 540nm. What is the mass of the protein in mg assuming you collected 10mL worth of the protein? Your standard curve should have a line of best fit with the equation y=0.0001x+0.0038.Using the equation for the best-fit straight line through your data, the average absorbance of your unknown samples U1 and U2, and any dilution factors (DON’T LEAVE OUT THE DILUTION FACTOR), calculate the concentration of protein in the original unknown protein sample. y = 1.6849x + 0.0414R² = 0.9904Salt Concentration (%) Transmittance (%) 0 77.23 3 79.23 6 80.39 9 82.71 12 85.66 15 87.55 What is the dependent variable and the independent variable? what patterns do you observe based on the information in the table?
- After three minutes, the concentration of drug Zip in the red blood cells is 10 mmoles l-1. What is the average rate of entry of drug Zip into the red blood cells in units of moles min-1 red blood cell-1 during the first three minutes after placing the red blood cells into the bathing solution? Assume that each red blood cell occupies about 1 x 10-13 liters.How does one measure Km using a Lineweaver-Burk plot? 1. By determining the reciprocal of the y-intercept 2. By determining the negative reciprocal of the x-intercept 3. By determining the slope and multiplying it by kcat 4. By determining the saturation pointThe amount of calcium in physiologic fluids can be determined by a complexometric titration with EDTA. In one such analysis, a 0.100-mL sample of blood serum was made basic by adding 2 drops of NaOH and titrated with 0.001 M EDTA, requiring 0.238 mL to reach the end point. Report the concentration of calcium in the sample as miligrams of Ca per 100 mL. (Ca = 40.078 amu).
- Which of the phi/psi angles would be violating a ramachandran plot? Select all that apply: Phi= 90; Psi=-120 Phi= -120; Psi=120 Phi= 0; Psi=0 Phi= -90; Psi=-60 Phi= 120; Psi=-120The normal concentration of Ca2+ in blood is 5.0 mEq>L. How many milligrams of Ca2+ are in 1.00 L of blood?A mixture of five proteins are analyzed by MALDI-TOF. Their molecular weigths are 3 kD, 22 kD, 100 kD, 225 kD and 515 kD. A peak appears in the mass spectrum at 33.3 kD. Which protein most likely gave this peak?