Q: What is the isoelectric point for the peptide GHIKL at pH 6? Draw the titration curve, showing pI,…
A: The mentioned peptide is GHIKL.
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Q: If an acid with a pKa of 5.3 is in an aqueous solution of pH 5.7, what percentage of the acid is…
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Q: The R group of glutamic acid is ––CH2CH2COOH (pKa = 4.07). Sketch the titration of the sidechain of…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: Which factors will cause protein denaturation? Select all that apply. a. heavy metals - Hg2+,…
A: The process that causes a protein to lose its shape is known as denaturation. Denaturation is…
Q: Calculate the pH of 50.0 mLs of 0.10 M arginine to which 20.0 mLs of 0.10 M HC have been added.
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Q: Calculate the pH of a 0.0148 M solution of arginine hydrochloride (arginine-HCI, H2Arg+). Arginine…
A:
Q: Arginine has ionizable groups with pKa values of 2.17, 9.04, and 12.48. A researcher makes up 73 mL…
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Q: 75mL of a 0.2M solution of a tripeptide Ser-Cys-His is adjusted to pH=8.6. The solution is then…
A: The explanation is given below-
Q: A 100 mL solution of 0.1 M amino acid (AA) at pH 1.0 was titrated with NAOH solution. The pH was…
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Q: Weight of oil sample: 0.250g Volume of titrant used for titration: 29.2ml calculate iodine number…
A: Given: Weight of oil sample: 0.250g, Volume of titrant used for titration: 29.2ml, To find:…
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Q: HEPES ((4-(2-hydroxyethyl)-1-piperazine ethane sulfonic acid) is a commonly used cell culture buffer…
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Q: + Calculate the volume, in liters, of 1.599 M KOH that must NH3 CI be added to a 0.104 L solution…
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Q: Plot the titration curves of valine and lysine amino acids in basic medium and calculate the pI…
A: amino acids have ionisable group which ionizes at different condition depending on pH of the…
Q: 75mL of a 0.2M solution of a tripeptide Ser-Cys-His is adjusted to pH=8.6. The solution is then…
A:
Q: At 25 °C the pKb for carbonate, CO3 2, is 3.67. What is the pKa for its conjugate acid? a. 2.1 x…
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Q: Stock solution of starch is prepared by dissolving a certain amount of starch (MM = 342.30 g/mol) in…
A: Given : Volume of buffer solution = 100 ml Concentration of starch solution = 2.92 μmol/mL = 2.92…
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Q: 8. What is the optimum pH to separate a mixture of lysine (2.2, 9,0, 10.0), arginine (1.82, 8.99,…
A: Differences in isoelectric point (pI) can be used to separate a mixture of amino acids by…
Q: 15 mL of a 0.4M solution of tripeptide Glu-Arg-His is adjusted to pH=6.0. the solution is then…
A: Millimoles of tripeptide taken =Molar concentration of tripeptide×Volume of tripeptide=0.4 M×15 mL=6…
Q: f a tetrapeptide, glutamate-glycine-alanine-lysine.
A: In this pI value concentration of Zwetterion is maximum and charge is neutral it can bot move in…
Q: Which factors will cause protein denaturation? Select all that apply. a. aqueous phosphate buffer…
A:
Q: 1. a) Describe Ph and Buffers for parental drug delivery? b)Explain the differences between PMDIS…
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Q: Arginine has ionizable groups with pKa values of 2.17 9.04, and 12.48. A researcher makes up 73 mL…
A: The question is based on the concept of PH. It involves calculation for amino acid Arginine. we…
Q: kb = 1.8 x 10-5 What is pkb, pka, and ka when kb is given
A: Given in formation is as follows: Kb = 1.8×10-5 Where, Kb is the dissociation constant of a base.…
Q: Isoelectric point of gelatin is 5,45. What sign of charge do the macroions of gelatin have in a…
A: Isoelectric point is a pH at which net charge on protein become zero or amino acid doesn't migrate…
Q: A mixture of valine, glycine, isoleucine, aspartic acid, phenylalanine, arginine, lysine,…
A:
Q: 65mL of a 0.2M solution of the tetrapeptide Arg-His-Ile-Glu is adjusted to pH=7.8. The solution is…
A: Here, we are titrating a tetrapeptide Arg-His-Ile-Glu against HCl.
Q: Calculate the pH at each of the following points for the titration of 100 mL of 0. 6 M dl-Histidine…
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Q: onsider the titration of a 30.00-mL 0.20 M solution of fully protonated form of tyrosine with 0.25M…
A: Fully protonated form of tyrosine means solution is in acidic form so use pka1
Q: A typical protein contains 16.2 wt% nitrogen. A 0.500-mL aliquot of protein solution was digested,…
A: The concentration of protein in sample has to be calculated in mg/mL.
Q: 10. Draw the full chemical structure of the tetrapeptide G-H-F-A as it would look at pH 12.0. Use…
A: We have to predict the structure of peptide at pH of 12
Q: what are ampholytes what is a zwitterion under what conditions do zwitterions exist
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
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- Which factors will cause protein denaturation? Select all that apply. a. aqueous phosphate buffer b. organic solvents c. changes in temperature d. small metal ions - Na+, Ca2+, Cl- e. Tris a buffer commonly used with proteins f. heavy metals - Hg2+, Pb2+, Ag+What is the isoelectric point for the peptide GHIKL at pH 6? Draw the titration curve, showing pI, pKa's, AND write out the coordinates.Plot the titration curves of valine and lysine amino acids in basic medium and calculate the pI values. valine (pKa1: 2,32; pKa2: 9,62) lysine (pKa1: 2,18; pKa2: 8,95; pKa3:10,53)
- Region/point where AA is predominantly present as a (-1) charged species? The effective buffering range for the amino acid in the acidic region? Region/point where the solution has 50:50 percent mixture of the (0) and (-1) speciesla) You dissolve 11.4 mg of histidine dichloride (mw 228) in 1 mL of water. What is the pH of the solution? 1b) To study a lysosomal reaction, you shift your histidine solution to pH 5 without altering the 1 mL volume. The reaction adds 0.06 mmol of hydroxide to the solution. What is the new pH of the histidine solution?A mixture of valine, glycine, isoleucine, aspartic acid, phenylalanine, arginine, lysine, asparagine, and methionine are put into an electrophoresis apparatus, with the buffer pH=6.5pH=6.5. Sort each amino acid according to its charge in the buffer with a pHpH of 6.5.
- Consider a buffer that has a free amino group (X-NH2 ) with a pKa of 8.5. If the buffer is present at a 0.1 M concentration what percentage of the buffer is in the acid form at pH 8.0?A. 25B. 50C. 60D. 75E. 90If you mix 100 microL of you enzyme with 400 microL buffer you would expect the Vo to: increase 4 fold. decrease 5 fold. decrease 2 fold. increase 4 fold.Calculate the isoionic and dielectric pH of 0.01510 M glutamine. pk1=2.19 pk=9.0
- Pkas for three titratable groups of histidine are 1.80, 6.04, and 9.33. What is the ratio of conjugate base to weak acid for a buffermade from histidine at pH=4.50?An enzyme is needed to be stored in a buffer solution with a pH of 10.00. Unfortunately, only three buffer systems are available in their laboratory: Buffer System Weak Acid Component Ka Conjugate Base Salt PAH Benzoic acid, C6H5COOH 6.25 x 10-5 NaC6H5COO SAD Boric acid, H3BO3 5.81 x 10-7 NaH2BO3 DOH Hydrogen cyanide, HCN 6.20 X 10-10 NaCN In what buffer system (PAH, SAD, or DOH) will Phoebe store the enzyme? (show calculations and briefly explain) Write the equilibrium reaction involved in the buffer system. Calculate the amount (in mL) of the 2.00 M stock solution (pH 10.00) of the same buffer system needed to prepare 250 mL of a 0.650 M buffer pH 10.00.15 mL of a 0.4M solution of tripeptide Glu-Arg-His is adjusted to pH=6.0. the solution is then titrated with 28mL of 0.25M NaOH. calculated the new pH value of the tripeptide solution. (relevent pKa values are: 2.2, 4.3, 6.0, 9.5, and 12.5). can someone teach me how to solve such kind of problem?
