Homework Answers
Answer:-
Question 1
True
because it indicates the dissolution of ionisable group in amino acid.
Question 2
The occasion when the molecule has a net charge of 0 .
because pI is pH at which molecules have equal magnitude of negative and positive charge i.e. net charge 0
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1
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2 pts Question 1 The number of plateaus in a titration curve of...
< Question 17 of 27 > The graphs show a titration curve for the amino acid...
< Question 17 of 27 > The graphs show a titration curve for the amino acid histidine. Label the fist curve with the major histidine species at each position. One histidine species will not be used. Label the second curve with the pK, values for the histidine functional groups and the isoelectric point (pl) of histidine. Answer Bank [Hisºj - [His") [ His* 1 - (His 15 20 25 30 IOH equivalents)
The graph below represents the titration of an amino acid with NaOH solution. View the titration...
The graph below represents the titration of an amino acid with NaOH solution. View the titration and answer the questions below (parts a through e) 2 (a) At what pH is the average net charge -12? 2 Number --PKz 9.6 2.00 pl-6.01 pH 8- (b) Where does the amino acid have a net charge of +1? O below pH 2.34 O at pH- 2.34 O at pH 6.01 O at pH 9.69 O above pH 9.69 pKi 2.34 1.0 1.5...
At physiological pH, the carboxylic acid group of an amino acid will be zwitterion form while...
At physiological pH, the carboxylic acid group of an amino acid will be zwitterion form while the amino group will be -yielding the protonated, protonated deprotonated, protonated deprotonated, deprotonated protonated, deprotonated Question 38 1 pts The net charge on an amino acid at its isoelectric point (pl) is O +2 -1
Incorrect Question 16 0/1 pts This amino acid is +H3N—CH-0-0 CH2 CEO neutral aspartic acid. aspartic...
Incorrect Question 16 0/1 pts This amino acid is +H3N—CH-0-0 CH2 CEO neutral aspartic acid. aspartic acid at its isoelectric point. aspartic acid at a pH that is lower than the isoelectric point. aspartic acid at a pH that is higher than the isoelectric point. Reconsider your answer! Since the nitrogen atom has a positive charge and both carboxylic acid groups have lost a hydrogen atom, this amino acid must be at its isoelectric point.
5. Amino acid titration. The graph below shows a titration of an amino acid with NaOH....
5. Amino acid titration. The graph below shows a titration of an amino acid with NaOH. This experiment reveals several important features of this amino acid. A) What is the identity of the amino acid? [Write its full name.] B) Match the following points in the titration curve. [In the space beside each description (left), write a number (1-6) corresponding to a specific pH (right).] The amino acid is fully protonated. 1) pH=0.0 PH The amino acid is fully deprotonated....
1) Titration curve of aspartate/ aspartic acid? 2) What happens when aspartic acid reacting with excess...
1) Titration curve of aspartate/ aspartic acid? 2) What happens when aspartic acid reacting with excess hydrochloric acid? explain what happens to structure of amino acid 3) What happens when aspartic acid reacts with excess sodium hydroxide? explain what happens to structure of amino acid
1. How many different erent groups comprise the common amino acids (ie those incorporated into most...
1. How many different erent groups comprise the common amino acids (ie those incorporated into most groups comprise the com proteins)? A 2 B 10 C. 20 D 25 2. When two separate cysteine A. a sulfu r ate cysteine SH groups form a bridge with each other, SS, the bridge is called SH B. a disulfide link. C. a disulfur bridge. D. a sulfate link The pH at which a witterion has exactly a zero charge is called the...
please show work and explain I have attached a titration of a mock amino acid with...
please show work and explain
I have attached a titration of a mock amino acid with OH-. I have labeled the different charge states of the amino acid as I, II, III, IV. I have labeled different points on the titration curve as A, B, ....G. I want you to tell me which form(s) of the species I, II, III or IV predominates (is present at greatest concentration) at each of the lettered points on the curve. I would also...
Ame: Table No. in Kennedy 236 Create a titration curve using the number 2 of this assessment. Be ...
ame: Table No. in Kennedy 236 Create a titration curve using the number 2 of this assessment. Be sure submit it with your quiz 1, with your quiz. b to label the axes appropriately, Copy this picture into a JPEG or POF and 1. Titration of 20.00 ml of o 275 M HCI with 0 500 M KOH nts and pH values that you determined for question number 1 and pH values the axes 2. 40.0 mL of 0.150 M...
Question 2 10 pts During transcription, the small and large ribosomal subunits combine to read the...
Question 2 10 pts During transcription, the small and large ribosomal subunits combine to read the mRNA strand and synthesize an polypeptide (amino acid chain). O True O False 10 pts Question 3 Cells: have phospholipid membranes which regulate the passage of molecule into their cytosol lles drnending on their function, but must have a nuci
< Question 17 of 27 > The graphs show a titration curve for the amino acid histidine. Label the fist curve with the major histidine species at each position. One histidine species will not be used. Label the second curve with the pK, values for the histidine functional groups and the isoelectric point (pl) of histidine. Answer Bank [Hisºj - [His") [ His* 1 - (His 15 20 25 30 IOH equivalents)
The graph below represents the titration of an amino acid with NaOH solution. View the titration and answer the questions below (parts a through e) 2 (a) At what pH is the average net charge -12? 2 Number --PKz 9.6 2.00 pl-6.01 pH 8- (b) Where does the amino acid have a net charge of +1? O below pH 2.34 O at pH- 2.34 O at pH 6.01 O at pH 9.69 O above pH 9.69 pKi 2.34 1.0 1.5...
At physiological pH, the carboxylic acid group of an amino acid will be zwitterion form while the amino group will be -yielding the protonated, protonated deprotonated, protonated deprotonated, deprotonated protonated, deprotonated Question 38 1 pts The net charge on an amino acid at its isoelectric point (pl) is O +2 -1
Incorrect Question 16 0/1 pts This amino acid is +H3N—CH-0-0 CH2 CEO neutral aspartic acid. aspartic acid at its isoelectric point. aspartic acid at a pH that is lower than the isoelectric point. aspartic acid at a pH that is higher than the isoelectric point. Reconsider your answer! Since the nitrogen atom has a positive charge and both carboxylic acid groups have lost a hydrogen atom, this amino acid must be at its isoelectric point.
5. Amino acid titration. The graph below shows a titration of an amino acid with NaOH. This experiment reveals several important features of this amino acid. A) What is the identity of the amino acid? [Write its full name.] B) Match the following points in the titration curve. [In the space beside each description (left), write a number (1-6) corresponding to a specific pH (right).] The amino acid is fully protonated. 1) pH=0.0 PH The amino acid is fully deprotonated....
1. How many different erent groups comprise the common amino acids (ie those incorporated into most groups comprise the com proteins)? A 2 B 10 C. 20 D 25 2. When two separate cysteine A. a sulfu r ate cysteine SH groups form a bridge with each other, SS, the bridge is called SH B. a disulfide link. C. a disulfur bridge. D. a sulfate link The pH at which a witterion has exactly a zero charge is called the...
please show work and explain
I have attached a titration of a mock amino acid with OH-. I have labeled the different charge states of the amino acid as I, II, III, IV. I have labeled different points on the titration curve as A, B, ....G. I want you to tell me which form(s) of the species I, II, III or IV predominates (is present at greatest concentration) at each of the lettered points on the curve. I would also...
ame: Table No. in Kennedy 236 Create a titration curve using the number 2 of this assessment. Be sure submit it with your quiz 1, with your quiz. b to label the axes appropriately, Copy this picture into a JPEG or POF and 1. Titration of 20.00 ml of o 275 M HCI with 0 500 M KOH nts and pH values that you determined for question number 1 and pH values the axes 2. 40.0 mL of 0.150 M...
Question 2 10 pts During transcription, the small and large ribosomal subunits combine to read the mRNA strand and synthesize an polypeptide (amino acid chain). O True O False 10 pts Question 3 Cells: have phospholipid membranes which regulate the passage of molecule into their cytosol lles drnending on their function, but must have a nuci
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