The amino acid arginine ionizes according to the following scheme:NH2NH2NH2NH2HC=NC=NC=C=N-Hpk, - 2.17--H*pK, - 8.99-HpK, - 12.5-HH.H.H.NHNHNHNH+H*+H*+H*H (CH2)3H (CH2)3(CH2)3(CH2)3H-N+-C-COOHH-N+-C- Coo-H2N-C-COo-H2N-C-COo-H HH.IIIIIV Part CCalculate the average charge on arginine when pH = 9.25. (Hint : Find the average charge for each ionizable group and sum these together.)Express your answer using two significant figures.SubmitRequest Answer

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Part C Calculate the average charge on arginine when pH = 9.25. (Hint : Find the average charge for each ionizable group and sum these together.) Express your answer using two significant figures. ν ΑΣφ Submit Request Answer

Part C Calculate the average charge on arginine when pH = 9.25. (Hint : Find the average charge for each ionizable group and sum these together.) Express your answer using two significant figures. ν ΑΣφ Submit Request Answer

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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pka = 2.20 HO НО pKa = 10.07 OH Incorrect 9.82 Incorrect 6.84 Correct: 10.07 Incorrect 3.86 Incorrect 9.95 "NH₂ pka = 3.86 pka = 9.82 In your lab you make the dipeptide Tyronsie-Aspartic Acid and now are studying the physical properties of a 0.40 M solution of your product. What will the pH of the solution be when the overall charge on the dipeptide is -2 1/2.
9. For the DNA segment with nucleotide sequence 5' TATCGC 3’, how many hydrogen bonds in total hold the base pairs between this segment and its complementary strand? А. 5 В. 6 С. 15 D. 18 E. Cannot be determined 10. What is the relation between the Fischer projection of two molecules below? H H- -OH Но- но- H- Но H- H- -OH- Но- CH2OH CH2OH A. C2 epimers В. СЗ ерimers C. Enantiomers D. Anomers E. Superimposable molecules Section B: True / False (10 marks) A group is deprotonated when its pKa value is lower than the pH of the solution. 1. T or F 2. a and B configurations are used to describe enantiomers. T or F 3. Hydrogen bond can be formed between two peptide bonds. T or F 4. A single strand of RNA has 20% U so it also has 20% A. T or F 5. Arginine's pI lies between 2.34 and 9.6. T or F 6. O-6 fatty acids have fewer double bonds than @-9 fatty acids have. T or F 7. The net charge of glycine changes at different pH. T or F 8. The hydroxyl group in threonine is deprotonated at high pH. T…
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CHE102 B urse Home KCHE102 Trad Exam 1 Item 6 Part A What is the mass of 3.00 L of an intravenous glucose solution with a density of 1.25 g/ml? Submit Request Answer Provide Feedback M
An unknown amino acid labeled KEMISTRI has an IpH value equal to 5.41. If its pKa1 is equal to 2.03, calculate the pKa2 of KEMISTRI. Show complete solutions. Based on the table below, what is the probable identity of KEMISTRI?
la) 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?
Calculate the isoionic and isoelectric pH of 0.01233 M methionine. Enter your answers to the hundredths place. isoionic pH isoelectric pH Amino Acid Asparagine Glutamine Isoleucine Leucine Methionine Phenylalanine Proline Serine Tryptophan Valine pKat 2.16 2.19 2.318 2.328 2.18 2.20 1.952 2.187 2.37 2.286 pK₂2 8.73 9.00 9.758 9.744 9.08 9.31 10.640 9,209 9.33 9.719
1 Submit Q10. !! Unanswered Q10. An average amino acid is about 110 Da (Daltons). If there are 1273 amino acids in the SARS-CoV-2 spike protein, what do you expect the mass of spike to be? How does that compare to the expected mass of about 200 KDa? more than expected by about 90 Da Less than expected by about 90 Da B. more than expected by by about 60 KDa less than expected by about 60 KDa Submit odf 0/11 answered
The pKa values for Lysine are 1.92/ 9.99/13.8. At what pH will the amino acid not migrate in an electrical field? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 10.9 b 9.8 c 11.9 d 9.7 e 8.4 f 11.2 g 10.6 h 11.6 i 11.1 im thinking answer is c please clarify
Select the correct statements about the isoelectric point of a protein. ( all that may applied ) - the charge on the protein will be neutral. - the pH of the solution will always be greater than 7. - the protein molecules will dissolve into solution. - the pH of the solution will ways be less than 7. - the protein molecules coagulate and precipitate from solution - the number of positive charges on the protein will be equal to the number of negative charges. - the pH of the solution will always be exactly 7.
Calculate the isoionic and isoelectric pH of 0.01111 M methionine. Enter your answers to the hundredths place. isoionic pH = 1 X100 TOOLS x10⁰ isoelectric pH = 2.089 x10-6 Amino Acid Asparagine Glutamine Isoleucine Leucine Methionine Phenylalanine Proline Serine Tryptophan Valine. pKal 2.16 2.19 2.318 2.328 2.18 2.20 1.952 2.187 2.37 2.286 pK₂2 8.73 9.00 9.758 9.744 9.08 9.31 10.640 9.209 9.33 9.719