Homework Answers
Percentage of active enzyme may be calculated by Handerson Haselbatch equation
pH = pKR + log [A+]/[HA]
7.0 = 9.6 + log [A+]/[HA]
Antilog[-2.6] = [A+]/[HA]
[A+]/[HA] =25/10000 =. 25%
Option A is correct.
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13. (3 pt) An enzyme needs a specific lysine side- chain to be protonated to be...
The lysine side chain has a pKR of about 10. Using the Henderson-Hasselbalch equation, solve for...
The lysine side chain has a pKR of about 10. Using the Henderson-Hasselbalch equation, solve for the ratio of [A-] / [HA] that corresponds to the ratio of deprotonated side chains / protonated side chains when pH 10.7. Please calculate the percentage of lysine's side chains that are deprotonated at pH 10.7. Please explain in detail if possible. Thank you.
Suppose you are researching a special enzyme named "Generic Enzyme." Generic Enzyme has an amino acid...
Suppose you are researching a special enzyme named "Generic Enzyme." Generic Enzyme has an amino acid side chain functional group that must be in the protonated form for the enzyme to be active. You have just purified Generic Enzyme and found that 1 in every 4 individual Generic Enzyme molecules is active. Your special Generic Enzyme is at a pH of 7.75. Generic enzyme has a phenolic hydroxyl group which is responsible for its catalytic activity. What is the pKa...
please answer part (ii) (b) The amino acid lysine has the following values of pK :...
please answer part (ii)
(b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino group in the side chain). At pH 7 it has the structure shown below (6). Draw the structure that you would expect for lysine at pH 9.7, indicating the charges as appropriate. HZN 0 HINA (2 marks) (c) Phenol (C6H5OH) and 2,4,6-trichlorophenol (C6H2C13OH) are both weak acids with pK, values of...
(b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino gro...
(b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino group in the side chain). At pH 7 it has the structure shown below (6). Draw the structure that you would expect for lysine at pH 9.7, indicating the charges as appropriate. HZN 0 HINA (2 marks) (c) Phenol (C6H5OH) and 2,4,6-trichlorophenol (C6H2C13OH) are both weak acids with pK, values of 9.89 and 6.21, respectively,...
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SIMULATION Zwitterions amino acid P PK PA PA f pr (-CO,H) NHj) (side chain) O Glycine 5.97 2.34 9.6 O Valine O Serine O Proline O Aspartic acad 2.77 1.89 960 3.65 O Lysine 5.97 2.32 9.61 5.68 221 9.15 6.48 199 1096 Net Charge 9.74 2.18 8.95 10.52 Major Fors 8 1 pt 4 pH-7.00 1pt Run Choose aspartc acd as the amimo acid At what pit does aupartic acid have no net charge 15 1p Recheck ( of...
10) Would an amino acid with the given side chain be most likely found in the hydrophobic or hydrophilic region of a pr...
10) Would an amino acid with the given side chain be most likely found in the hydrophobic or hydrophilic region of a protein? -CH-CH3 он CH2-CH-CH3 он CH3 11) What process occurs when heat, acids, bases, and heavy metal ions cause loss of biological function of a protein? 12) Answer the following questions regarding enzyme activity: a) The optimum temperature and pH for most biological enzymes is b) The molecules to which an enzyme binds are called the c) The...
Discussion 1. Metabolic tests look for the presence of a specific metabolic pathway or enzyme found...
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3. Look at your plot of the data. Which of the four reagents was the most effective at denaturing...
#4 the reagnet is HCl
3. Look at your plot of the data. Which of the four reagents was the most effective at denaturing protein-chromophore complex? Justify your answer. 12 pts] e lon Hc1 was the most effective. This is because it is aston a cid, whrin esuited in the qrcatest ratt of denatoratianc to the othex denaturants. Consider the chemical chain might be chemically changed when the reagent identifned in #3 ts added to the protein. Write properties of...
Based on your interpretation, is the enzyme a competitive non-competitive inhibitor, please explain 13. What 2...
Based on your interpretation, is the enzyme a competitive non-competitive inhibitor, please explain 13. What 2 environmental conditions can affect the activity of an activity of an enzyme? Use the 2 graphs below to answer Questions wer Questions 14-16 Relative Rate of Enzyme Action Relative Rate of Enzyme Action 0 10 20 30 40 Temperature (C) 50 60 14. What is the optimal pH that this enzyme functions at? 15. What is the optimal temperature that this enzyme functions at...
4. ( pt) Describe the ways that sugars can be linked to proteins to form glycoproteins. Be specific about the types...
4. ( pt) Describe the ways that sugars can be linked to proteins to form glycoproteins. Be specific about the types of linkages possible and the amino acids involved. (2 pts) Below is a portion of a glycogen molecule. Use the picture to answer the following questions 5. снон CH,OH ON OH CH,OH Side chain OH 4 1 CH,OH снон CH,OH сн, сн,он он o- OH 0AOH LOAOH OH HOOH CH OH 4 OH OH OH OH 2 What type...
please answer part (ii)
(b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino group in the side chain). At pH 7 it has the structure shown below (6). Draw the structure that you would expect for lysine at pH 9.7, indicating the charges as appropriate. HZN 0 HINA (2 marks) (c) Phenol (C6H5OH) and 2,4,6-trichlorophenol (C6H2C13OH) are both weak acids with pK, values of...
(b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino group in the side chain). At pH 7 it has the structure shown below (6). Draw the structure that you would expect for lysine at pH 9.7, indicating the charges as appropriate. HZN 0 HINA (2 marks) (c) Phenol (C6H5OH) and 2,4,6-trichlorophenol (C6H2C13OH) are both weak acids with pK, values of 9.89 and 6.21, respectively,...
SIMULATION Zwitterions amino acid P PK PA PA f pr (-CO,H) NHj) (side chain) O Glycine 5.97 2.34 9.6 O Valine O Serine O Proline O Aspartic acad 2.77 1.89 960 3.65 O Lysine 5.97 2.32 9.61 5.68 221 9.15 6.48 199 1096 Net Charge 9.74 2.18 8.95 10.52 Major Fors 8 1 pt 4 pH-7.00 1pt Run Choose aspartc acd as the amimo acid At what pit does aupartic acid have no net charge 15 1p Recheck ( of...
10) Would an amino acid with the given side chain be most likely found in the hydrophobic or hydrophilic region of a protein? -CH-CH3 он CH2-CH-CH3 он CH3 11) What process occurs when heat, acids, bases, and heavy metal ions cause loss of biological function of a protein? 12) Answer the following questions regarding enzyme activity: a) The optimum temperature and pH for most biological enzymes is b) The molecules to which an enzyme binds are called the c) The...
Discussion 1. Metabolic tests look for the presence of a specific metabolic pathway or enzyme found in bacteria. How might this information be useful in the development of new antibacterial drugs? 2. How can you tell if the enzyme being tested for on a plate is an exoenzyme instead of an endoenzyme? Why is gelatin not used as a solidifying agent in microbiological media? 3. Newer tests like PCR can identify an unknown bacterium by looking for specific DNA sequences....
#4 the reagnet is HCl
3. Look at your plot of the data. Which of the four reagents was the most effective at denaturing protein-chromophore complex? Justify your answer. 12 pts] e lon Hc1 was the most effective. This is because it is aston a cid, whrin esuited in the qrcatest ratt of denatoratianc to the othex denaturants. Consider the chemical chain might be chemically changed when the reagent identifned in #3 ts added to the protein. Write properties of...
Based on your interpretation, is the enzyme a competitive non-competitive inhibitor, please explain 13. What 2 environmental conditions can affect the activity of an activity of an enzyme? Use the 2 graphs below to answer Questions wer Questions 14-16 Relative Rate of Enzyme Action Relative Rate of Enzyme Action 0 10 20 30 40 Temperature (C) 50 60 14. What is the optimal pH that this enzyme functions at? 15. What is the optimal temperature that this enzyme functions at...
4. ( pt) Describe the ways that sugars can be linked to proteins to form glycoproteins. Be specific about the types of linkages possible and the amino acids involved. (2 pts) Below is a portion of a glycogen molecule. Use the picture to answer the following questions 5. снон CH,OH ON OH CH,OH Side chain OH 4 1 CH,OH снон CH,OH сн, сн,он он o- OH 0AOH LOAOH OH HOOH CH OH 4 OH OH OH OH 2 What type...
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