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- The following are denaturing agents for proteins, except:* Please choose one correct answer only. A. Change in pH B. Heat C. Ultraviolet light D. Organic solvents E. None of the given optionsAssuming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer solution with an optimum pH of 7.4–7.6? NaOCl / HOCl (K a = 3.2 × 10 –8) NH 3 / NH 4Cl (K a = 5.6 × 10 –10) NaNO 2 / HNO 2 (K a = 4.5 × 10 –4) NaCl / HCl CH 3COONa / CH 3COOH (K a = 1.8 × 10 –5)Many consumer products are almost identical in chemical composition but are sold under different brand names and at varying prices. Should some medical drugs be identified by their chemical (generic) names or trade names? Why?
- .Which of the following substances would be considered basic? A. hydrochloric acid (pH 1.0) B. milk (pH 6.6) C. baking soda (pH 8.1) D. water (pH 7.0) E. Dr. Pepper (pH 3.0)Four known amino acids (AA) produce a chromatograph with Rf values as follows: AA1 =0.25, AA2 =0.66, AA3=0.50,AA4=0.80. A mixture of three amino acids yields spots that are 2 cm,5.2cm, and 6.4 cm from the organ. The solvent front is 8.0 cm from the origin. Which three of the four amino acids are contained in the mixture?How can you determine proteins by affinity chromatography?
- 1. Identify what test is being described: Refers to the breaking of peptide bonds that connect amino acids to compose protein ? A. Hydrolysis B. Denaturation C. Heat denaturation D. Organic solvent denaturation E. Biuret test F. Hopkins – Cole Reaction G. Millon’s test H. Ninhydrin Test I. Sulfur test J. Xanthroproteic Test K. Chromatography L. Paper chromatography M. Competitive inhibition N. Noncompetitive inhibition O. Rancidity P. Hydrogenation 2. Identify what test is being described: Test that detects the free amino group in amino acids ? A. Hydrolysis B. Denaturation C. Heat denaturation D. Organic solvent denaturation E. Biuret test F. Hopkins – Cole Reaction G. Millon’s test H. Ninhydrin Test I. Sulfur test J. Xanthroproteic Test K. Chromatography L. Paper chromatography M. Competitive inhibition N. Noncompetitive inhibition O. Rancidity P. Hydrogenation 3. Identify what test is being described: A foreign substance, which is structurally similar to the substrate, competes for…Create an illustrated step-by-step schematic diagram of the following Analysis of Lipids: a) Solubility Test b) Translucent Testc) Huble's TestWhat enables a radioisotope to substitute for an ordinary (nonradioactive) atom of the same element molecule?
- The pH of black coffee is 5, and that of milk of magnesia is 10. Is the coffee twice as acidic as milk of magnesia?Why is it important to study the strength of acids and bases?What is the isoelectric point of casein? Please choose one correct answer only. A. pH 6.6 B. pH 5.6 C. pH 4.6 D. pH 3.6 E. None of the given options