Homework Answers
a) which amino acid tested is most polar?
Answer: Glutamic acid
b) look up the structure of the amino acids. explain why it makes sense that the amino acid you listed is more polar than the others?
Answer: It has two polar electrically charged carboxylate anions, overall charge = -1, whereas Serine has only one carboxylate anion and is electrically neutral, in Isoleucine hydrocarbon chain makes it non-polar and electrically neutral.
c) what amino acids are in the fruit juice?
Answer: From TLC it is clear that the fruit juice contains glutamic acid as its Rf value exactly matches with that.
Hope this helped you!
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a) which amino acid tested is most polar?
b) look up the structure of the amino...
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case,...
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case, students can use the unique chemistry of the amino acid to determine its migration in a specific solvent. The solutions of amino acids can be applied to the place and allowed to dry. The plate is placed in the solvent, and capillary action will carry the amino acids upward along the plate. The side chains, or R groups, can be characterized by their...
Constants ! Periodic Part A Explain why amino acids, unlike most amnines and carboxylic acids, are...
Constants ! Periodic Part A Explain why amino acids, unlike most amnines and carboxylic acids, are insoluble in diethyl ether. O An amino acid is insoluble in diethyl ether (a relatively nonpolar solvent), because an amino acid exists as a nonpolar molecule. In contrast, carboxylic acids and amines are more polar because they have a single charge depending on the extent of dissociation in diethyl ether An amino acid is insoluble in diethyl ether (a relatively nonpolar solvent), because an...
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...
1) Which of the following is an amino acid? A) e R-CH-CH2-C00R -CH-CooR -CH-C-CO ile R-CH-C-NH3...
1) Which of the following is an amino acid? A) e R-CH-CH2-C00R -CH-CooR -CH-C-CO ile R-CH-C-NH3 R-C=CH-Coo NH3 NH3 NH3 ONH 3 D) coo B) E) 2) Which of the following amino acids has a sulfur in the R group? A) serine B) cysteine C) asparagine D) tyrosine E) leucine 3) Which of the following terms describes the side chain of valine? A) acidic B) basic C) charged, polar D) uncharged, polar E) nonpolar 4) Which of the following is...
(a) Into which channel is Fe2+ most likely to travel? Briefly explain your answer by including...
(a) Into which channel is Fe2+ most likely to travel? Briefly
explain your answer by including the dominant interparticle force
between it and the amino acid R groups that line the channel.
(b) Into which channel is O2 most likely to travel? Briefly
explain your answer by including the dominant interparticle force
between it and the amino acid R groups that line the channel.
(c) Suppose there is a region in a protein where a significant
amount of H bonding...
Hi can someone help me with my pre lab theory questions (1,2,3) on rate of elution...
Hi can someone help me with my pre lab theory questions (1,2,3)
on rate of elution or Rf? Here is some background below. Please
help explain as many as possible (1-3)! I dont really get the
relation ships in this lab, thank you!
1. What factors affect the rate of elution in organic compounds? 2. Explain what is the relationship between polarities of compounds (polar/non- polar compound) and rate of elution (Rf). 3. Explain what is the relationship between solvent...
3. A Nucleic acid is a polymer made up of which kind of monomers? a) modified...
3. A Nucleic acid is a polymer made up of which kind of monomers? a) modified glucose and phosphate. b) a modified sugar, a phosphate and an amino acids, c), a 5-C sugar and phosphate groups, d) fatty acids and glycerol, e) a nucleotides. 4. WhenCV and H' react to form CH, the number of electrons involved in bonding is? a) 1, b) 2, c) 6. d) 8. e) 4. 5. Serine is an amino acid in which the elements...
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more...
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more likely to be found in these structures based on its charge and R-group size? A. Glycine B. Proline C. A sequence of several Glutamate D. A sequence of several Lysine E. Alanine Question 12. Which of the following is least likely to result in protein denaturation? A) Altering net charge by changing pH B) Changing the salt concentration C) Disruption of weak interactions by...
d) Draw the structure of the most polar compound and draw an arrow (through the structure)...
d) Draw the structure of the most polar compound and draw an arrow (through the structure) representing the overall/net dipole moment of the compound. 3) Suppose that your TLC showed that the compounds had not travelled away from your loading spot. What would be an easy condition to change to make the compounds travel up the TLC plate)? Briefly, state specifically what new condition might you try! (0.5) New conditions you could try is dotting more in the same spot,...
____ 1. The diagram below represents serine, a polar, uncharged amino acid. Which functional group gives...
____ 1. The diagram below represents serine, a polar, uncharged
amino acid. Which functional group gives serine its
distinct property?
a. H3
b. CH2OH
c. –H
d. COO–
____ 2. The monomers shown below are monomers for which of the
following natural polymers?
a. polysaccharides
b. plastics
c. DNA
d. proteins
____ 3. Which of the following processes illustrates the production
of a protein?
a. specific code for amino acids --> amino acid chain -->
gene --> DNA --> specific...
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case, students can use the unique chemistry of the amino acid to determine its migration in a specific solvent. The solutions of amino acids can be applied to the place and allowed to dry. The plate is placed in the solvent, and capillary action will carry the amino acids upward along the plate. The side chains, or R groups, can be characterized by their...
Constants ! Periodic Part A Explain why amino acids, unlike most amnines and carboxylic acids, are insoluble in diethyl ether. O An amino acid is insoluble in diethyl ether (a relatively nonpolar solvent), because an amino acid exists as a nonpolar molecule. In contrast, carboxylic acids and amines are more polar because they have a single charge depending on the extent of dissociation in diethyl ether An amino acid is insoluble in diethyl ether (a relatively nonpolar solvent), because an...
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...
1) Which of the following is an amino acid? A) e R-CH-CH2-C00R -CH-CooR -CH-C-CO ile R-CH-C-NH3 R-C=CH-Coo NH3 NH3 NH3 ONH 3 D) coo B) E) 2) Which of the following amino acids has a sulfur in the R group? A) serine B) cysteine C) asparagine D) tyrosine E) leucine 3) Which of the following terms describes the side chain of valine? A) acidic B) basic C) charged, polar D) uncharged, polar E) nonpolar 4) Which of the following is...
(a) Into which channel is Fe2+ most likely to travel? Briefly
explain your answer by including the dominant interparticle force
between it and the amino acid R groups that line the channel.
(b) Into which channel is O2 most likely to travel? Briefly
explain your answer by including the dominant interparticle force
between it and the amino acid R groups that line the channel.
(c) Suppose there is a region in a protein where a significant
amount of H bonding...
Hi can someone help me with my pre lab theory questions (1,2,3)
on rate of elution or Rf? Here is some background below. Please
help explain as many as possible (1-3)! I dont really get the
relation ships in this lab, thank you!
1. What factors affect the rate of elution in organic compounds? 2. Explain what is the relationship between polarities of compounds (polar/non- polar compound) and rate of elution (Rf). 3. Explain what is the relationship between solvent...
3. A Nucleic acid is a polymer made up of which kind of monomers? a) modified glucose and phosphate. b) a modified sugar, a phosphate and an amino acids, c), a 5-C sugar and phosphate groups, d) fatty acids and glycerol, e) a nucleotides. 4. WhenCV and H' react to form CH, the number of electrons involved in bonding is? a) 1, b) 2, c) 6. d) 8. e) 4. 5. Serine is an amino acid in which the elements...
Question 11. Certain amino acids destabilize or prevent formation of alpha-helices. Which amino acid is more likely to be found in these structures based on its charge and R-group size? A. Glycine B. Proline C. A sequence of several Glutamate D. A sequence of several Lysine E. Alanine Question 12. Which of the following is least likely to result in protein denaturation? A) Altering net charge by changing pH B) Changing the salt concentration C) Disruption of weak interactions by...
d) Draw the structure of the most polar compound and draw an arrow (through the structure) representing the overall/net dipole moment of the compound. 3) Suppose that your TLC showed that the compounds had not travelled away from your loading spot. What would be an easy condition to change to make the compounds travel up the TLC plate)? Briefly, state specifically what new condition might you try! (0.5) New conditions you could try is dotting more in the same spot,...
____ 1. The diagram below represents serine, a polar, uncharged
amino acid. Which functional group gives serine its
distinct property?
a. H3
b. CH2OH
c. –H
d. COO–
____ 2. The monomers shown below are monomers for which of the
following natural polymers?
a. polysaccharides
b. plastics
c. DNA
d. proteins
____ 3. Which of the following processes illustrates the production
of a protein?
a. specific code for amino acids --> amino acid chain -->
gene --> DNA --> specific...
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