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(10) (2) (2) 2. Consider the amino acid, glycine, in its fully protonated form *H3NCH2CO2H, where...
(10) (2) © © eg 2. Consider the amino acid, glycine, in its fully protonated form...
(10) (2) © © eg 2. Consider the amino acid, glycine, in its fully protonated form *H3NCH2CO2H, where the pka1 = 2.35 and pka2 = 9.78. a) Kaz is the equilibrium constant for the second dissociation of *H3NCH2CO2H. Write the chemical equation that illustrates this equilibrium. b) Write the structure for the major species at pH = 1.35. c) Write the structure for the major species at pH = 3.35. d) Write the structure for the major species at pH...
Consider the amino acid, glycine, in its fully protonated form + H3NCH2CO2H, where the pKa1 =...
Consider the amino acid, glycine, in its fully protonated form + H3NCH2CO2H, where the pKa1 = 2.35 and pKa2 = 9.78. a) Ka2 is the equilibrium constant for the second dissociation of + H3NCH2CO2H. Write the chemical equation that illustrates this equilibrium. b) Write the structure for the major species at pH = 1.35. c) Write the structure for the major species at pH = 3.35. d) Write the structure for the major species at pH = 10.78. e) Calculate...
The structure of glycine in its fully protonated form is shown below. Its first pKa is...
The structure of glycine in its fully protonated form is shown below. Its first pKa is 2.34, while its second pKA is 9.6. What will be the average net charge on glycine molecules in a solution whose pH is 3.34? Explain your answer fully with a combination of words and equations as appropriate! (That's what's written) H3N^+-CH2-COOH Glycine Thanks guys. I missed the review going over this and Im a little anxious as the test is soon. I have the...
The structure of alanine is shown at the right in its fully protonated form. The pK_a...
The structure of alanine is shown at the right in its fully protonated form. The pK_a for the ionizable groups are 2.3 (alpha-carboxyl group), and 9.7 (alpha-amino group). Calculate the pH at which alanine will have a net charge of 0. pH = Select the true statements about alanine when the pH is equal to its pl. If an electric field is applied, alanine will not move toward either electrode. Since alanine does not have an ionizable R group, the...
Post-Lab Questions 1. Look up the structure in your textbook of the amino acid you titrated....
Post-Lab Questions 1. Look up the structure in your textbook of the amino acid you titrated. Write the structure you expect at pH (a) 2.5 and (b) 12 2. Compare your isoelectric point value (pl value) with the value of the amino acid listed in your textbook. How does it compare? Into which class does your amino acid fall? 3. Which data point can you obtain with greater accuracy from your graph-the pK values from the "legs" or the isoelectric...
Student Name: ID#: Section: 01 2) Lysine is a basic amino acid and has the following...
Student Name: ID#: Section: 01 2) Lysine is a basic amino acid and has the following structure at low pH: (25 points) 0 HN-CH-C OH рка, рКа рКак 2.18 8.95 10.79 (CH2)4 ΝΗ, If this amino acid is titrated with a strong base answer the following questions: 1. Write the dissociation equation for Lysine and show the pH at each dissociation step. [10 pts] 2. Find the charge for the amino acid structure at each dissociation step. [6 pts] 3....
2. (10 points) The structure for the amino acid histidine is shown below (at pH 1)....
2. (10 points) The structure for the amino acid histidine is shown below (at pH 1). Write the chemical equations for the ionic dissociations of histidine (as the pH increases) Determine the isoelectric point for histidine and indicate the structure present at the isoelectric point. The pka values for histidine are 1.82 (-CO2H). 9.17 (NH3'), and 6.00 (R group). OOH "HaN NH "INP
B. The amino acid cysteine is shown in its fully protonated form. All acidic sites are labeled. For each of the bas...
B. The amino acid cysteine is shown in its fully protonated form. All acidic sites are labeled. For each of the bases given, determine whether that base can successfully (Ke>1000) deprotonate each acidic site (you may assume you have an excess of each base). Put an X in the box next to each site that would be deprotonated successfully-or an X next to none. each base is graded without partial credit Base None A1 A2 АЗ A1 CH OLi 2...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids Hydrolysis of salt Laboratory buffers, Polyprotie acids QUESTIONS 1. The DNA strand complementary to the strand 3-GTAGCGTAT-Y' would have the sequence a SLTACOCATAT-3 b.3.CATOXICATA-S c. 3-ATGCGTATA-S" ATATGCGTAS 2. When cytosine is treated with bisulfite, the amino group is replaced with a carbonyl group. Identify the resulting base a. adenine b. guanine c uracil d. thyminee. typoxanthine 3. How many amino acids would be in...
(10) (2) © © eg 2. Consider the amino acid, glycine, in its fully protonated form *H3NCH2CO2H, where the pka1 = 2.35 and pka2 = 9.78. a) Kaz is the equilibrium constant for the second dissociation of *H3NCH2CO2H. Write the chemical equation that illustrates this equilibrium. b) Write the structure for the major species at pH = 1.35. c) Write the structure for the major species at pH = 3.35. d) Write the structure for the major species at pH...
The structure of alanine is shown at the right in its fully protonated form. The pK_a for the ionizable groups are 2.3 (alpha-carboxyl group), and 9.7 (alpha-amino group). Calculate the pH at which alanine will have a net charge of 0. pH = Select the true statements about alanine when the pH is equal to its pl. If an electric field is applied, alanine will not move toward either electrode. Since alanine does not have an ionizable R group, the...
Post-Lab Questions 1. Look up the structure in your textbook of the amino acid you titrated. Write the structure you expect at pH (a) 2.5 and (b) 12 2. Compare your isoelectric point value (pl value) with the value of the amino acid listed in your textbook. How does it compare? Into which class does your amino acid fall? 3. Which data point can you obtain with greater accuracy from your graph-the pK values from the "legs" or the isoelectric...
Student Name: ID#: Section: 01 2) Lysine is a basic amino acid and has the following structure at low pH: (25 points) 0 HN-CH-C OH рка, рКа рКак 2.18 8.95 10.79 (CH2)4 ΝΗ, If this amino acid is titrated with a strong base answer the following questions: 1. Write the dissociation equation for Lysine and show the pH at each dissociation step. [10 pts] 2. Find the charge for the amino acid structure at each dissociation step. [6 pts] 3....
2. (10 points) The structure for the amino acid histidine is shown below (at pH 1). Write the chemical equations for the ionic dissociations of histidine (as the pH increases) Determine the isoelectric point for histidine and indicate the structure present at the isoelectric point. The pka values for histidine are 1.82 (-CO2H). 9.17 (NH3'), and 6.00 (R group). OOH "HaN NH "INP
B. The amino acid cysteine is shown in its fully protonated form. All acidic sites are labeled. For each of the bases given, determine whether that base can successfully (Ke>1000) deprotonate each acidic site (you may assume you have an excess of each base). Put an X in the box next to each site that would be deprotonated successfully-or an X next to none. each base is graded without partial credit Base None A1 A2 АЗ A1 CH OLi 2...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids Hydrolysis of salt Laboratory buffers, Polyprotie acids QUESTIONS 1. The DNA strand complementary to the strand 3-GTAGCGTAT-Y' would have the sequence a SLTACOCATAT-3 b.3.CATOXICATA-S c. 3-ATGCGTATA-S" ATATGCGTAS 2. When cytosine is treated with bisulfite, the amino group is replaced with a carbonyl group. Identify the resulting base a. adenine b. guanine c uracil d. thyminee. typoxanthine 3. How many amino acids would be in...
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