Homework Answers
Answer:
1st question :option 3/c water and butanol
The dipeptide is formed by the combination of acidic amino acid glu and basic amino acid asn
They have extra - COOH Grp and - NH2 group in their chain so they can easily form H bonding with water and butanol both so it is soluble most in water butanol mixture.
Question 10) option 2/b) 1
During reaction with thrombin the poly peptide chain will break and it will form a tripeptide
Lys-His-Pro and a single amino acid histidine as well.
So no of peptide fragment is one
Question 11) option 4/d heptane.
Histidine cannot form hydrogen bonds with heptane only. Other than heptane it will form inter molecular hydrogen bonding with all the other solvents given in the option. So it is least soluble in heptane.
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The dipeptide, Glu-Asn would be most soluble in which solvent system? water and...
please explain how to solve this problem, the answer is provided 9. Peptides: (20 pts.). A...
please explain how to solve this problem, the answer
is provided
9. Peptides: (20 pts.). A polypeptide (X) gives 7 fragments when treated with chymotrypsin (A-G). The same peptide also gives 9 fragments when treated with trypsin (I- IX). After Chymotrypsin A) Thr-Thr-Tyr-Ala-Gly-Phe-Phe-Ile-Asp- Lys B) Ala-Cys-Pro-Leu-Tyr-Gin-lle-Arg C) Met-Ser-Thr-Tyr-Pro-Gly-Arg D) Cys-Leu-Val-Phe-Ile-Lys E) Leu-Ala-Trp-Gly-Val F) Ser-Phe-Ala-Pro-Lys G) Met-Asp-Lys Afier Trypsin I) Ala-Pro-Lys-Met-Asp-Lys-Thr-Thr-Tyr II) Pro-Gly-Arg-Cys-Leu-Val-Phe III) Ile-Lys-Ala-Cys-Pro-Leu-Tyr IV) Ile-Asp-Lys-Met-Ser-Thr-Tyr V) Gin-Ile-Arg-Leu-Ala-Trp VIAla-Gly-Phe VII) Gly-Val VIII) Ser-Phe LX) Phe A) What is the primary...
please help with these 5 questions Consider a polypeptide consisting of 19 amino acid residues. Its...
please help with these 5
questions
Consider a polypeptide consisting of 19 amino acid residues. Its structure is shown below. Lys-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-Tyr . Draw the fragments that would result if the peptide was treated with trypsin. (No partial credit) . Draw the fragments that would result if the peptide was treated with chymotropsin. (No partial credit) MATCH a term from the list below to each definition. Place the letter of the term in the blank to the left of the definition...
Which organic solvent - A, B, C, or D - would be most soluble in water?...
Which organic solvent - A, B, C, or D - would be most soluble in water? Explain your choice. A. CH3CH2CH2CH2CH2CH3 B. CH3OCH2CH2CH3 C. CH3OCH2CH2OCH3 D. CH3CH2CH2CH3 In which of the following alcohol solvents do you think NaCl would be the most soluble? A. CH3OH B. CH3CH2OH C. CH3CH2CH2OH D. CH3CH2CH2CH2OH
Which one of the following represents a tetrapeptide? A) Val-Ile-Asp-Asp B) Ala-Ala-Ala-Ala-Val-Val C) Ala-Ser-Val-Val-Ile D) Ser-Ser-Ala-Ala-Gly-Gly-Glu-Glu...
Which one of the following represents a tetrapeptide? A) Val-Ile-Asp-Asp B) Ala-Ala-Ala-Ala-Val-Val C) Ala-Ser-Val-Val-Ile D) Ser-Ser-Ala-Ala-Gly-Gly-Glu-Glu E) Ser-Ala-Thr-Pro-Leu In the octapeptide, Cys-Ile-Ser-Asp-Gly-His-Gly-Gly, which is the N-terminal amino acid A) Ser B) Ile C) Asp D) Cys E) Gly If an amino acid has one carboxyl group and one amino group, and the pka's are 2.4 and 9.8 respectively, what is its isoelectric point? A) 3.7 B) 6.1 C) 7.0 D) 7.9 E) 12.2 Which of the following will migrate toward...
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D....
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
please help. thanks in advance! 6 Which of the following arrows correctly points to the anomeric carbon? 7. Of the following, what is the most likely reason that cooking with Nutrasweet (Aspartam...
please help. thanks in advance!
6 Which of the following arrows correctly points to the anomeric carbon? 7. Of the following, what is the most likely reason that cooking with Nutrasweet (Aspartame) destroys the sweetness? HO-C-CH2-CH-C-N-CH-C-OCH NH2 CH2-CsHs Aspartame 8. A heptapeptide containing 2 alanine residues and one each of glutamine, phenylalanine, roline, tyrosine and valine was analyzed as follows: 1. Treatmen w 2,4-dinitrofluorobenzene followed by complete hydrolysis yielded 2,4-dinitrophenylalanine. 2. Partial hydrolysis with aqueous acid yielded the following fragments:...
please answer all the questions ! Question 16 Consider the Carvacrol molecule below and determine which...
please answer all the questions !
Question 16 Consider the Carvacrol molecule below and determine which class of terpenes it belongs in. OH monoterpene tetraterpene diterpene triterpene sesquiterpene Question 19 Predict the products when triacontyl hexadecanoate, a major component of beeswax, is treated with aqueous NaOH. CHỊCH, CHỊCH,CH, NaOH, Q. CHICHICOH CHACH.COM CHACH. ONA HACH MACONI CH3(CH2)14 COH + CH3(CH2)28CH2ONa CH3(CH2)14COH + CH3(CH2)28CH2OH I 11 CH3(CH2)14CNa + CH3(CH2)28CH2OH CH3(CH2)14CONa + CH3(CH2)28CH2OH IV II O O O O III IV none...
Which solvent(s) listed below would be satisfactory in Snl reactions? 0 o Н;С CH; DMSO H3C...
Which solvent(s) listed below would be satisfactory in Snl reactions? 0 o Н;С CH; DMSO H3C Н;С CH3CH2OH H DMF I II III a. I only b. II only c. III only d. I and II Oe. I and III f. II and III Og. All of the above What two products are expected in the following reaction? CH3 HBT H H BI CH CH; CH BI H Br I II III H Br Br H CH; CH IV V...
HELP Please!!! Match the pka (determined in an unknown mixture of water and an organic solvent)...
HELP Please!!!
Match the pka (determined in an unknown mixture of water and an organic solvent) with the correct acid: N=CH3 OH A D 0 F3C OH H3C H B E Eto OEt O2N-CH3 с F I. 0.8 II. 19.4 III. 28 What is the pka of A? What is the pka of B? What is the pka of C? What is the pka of D? What is the pka of E? What is the pka of F? IV. 15.7...
which of the following is the structure of 2-ethylbenzamide 3. (20 points) The following alcohol undergo...
which of the following is the structure of
2-ethylbenzamide
3. (20 points) The following alcohol undergo chromic acid test. Complete the blank for each alcohol Color after reaction is test positive or negative? Class of Alcohol CH₂ - CHCH, CH, CH, ан,— —днан, Color after reaction is test positive or negative? Class of Alcohol Color after reaction is test positive or negative? Class of Alcohol at CH2OH & CH₂ CH3 6th c Color after reaction is test positive or negative?...
please explain how to solve this problem, the answer
is provided
9. Peptides: (20 pts.). A polypeptide (X) gives 7 fragments when treated with chymotrypsin (A-G). The same peptide also gives 9 fragments when treated with trypsin (I- IX). After Chymotrypsin A) Thr-Thr-Tyr-Ala-Gly-Phe-Phe-Ile-Asp- Lys B) Ala-Cys-Pro-Leu-Tyr-Gin-lle-Arg C) Met-Ser-Thr-Tyr-Pro-Gly-Arg D) Cys-Leu-Val-Phe-Ile-Lys E) Leu-Ala-Trp-Gly-Val F) Ser-Phe-Ala-Pro-Lys G) Met-Asp-Lys Afier Trypsin I) Ala-Pro-Lys-Met-Asp-Lys-Thr-Thr-Tyr II) Pro-Gly-Arg-Cys-Leu-Val-Phe III) Ile-Lys-Ala-Cys-Pro-Leu-Tyr IV) Ile-Asp-Lys-Met-Ser-Thr-Tyr V) Gin-Ile-Arg-Leu-Ala-Trp VIAla-Gly-Phe VII) Gly-Val VIII) Ser-Phe LX) Phe A) What is the primary...
please help with these 5
questions
Consider a polypeptide consisting of 19 amino acid residues. Its structure is shown below. Lys-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-Tyr . Draw the fragments that would result if the peptide was treated with trypsin. (No partial credit) . Draw the fragments that would result if the peptide was treated with chymotropsin. (No partial credit) MATCH a term from the list below to each definition. Place the letter of the term in the blank to the left of the definition...
Which one of the following represents a tetrapeptide? A) Val-Ile-Asp-Asp B) Ala-Ala-Ala-Ala-Val-Val C) Ala-Ser-Val-Val-Ile D) Ser-Ser-Ala-Ala-Gly-Gly-Glu-Glu E) Ser-Ala-Thr-Pro-Leu In the octapeptide, Cys-Ile-Ser-Asp-Gly-His-Gly-Gly, which is the N-terminal amino acid A) Ser B) Ile C) Asp D) Cys E) Gly If an amino acid has one carboxyl group and one amino group, and the pka's are 2.4 and 9.8 respectively, what is its isoelectric point? A) 3.7 B) 6.1 C) 7.0 D) 7.9 E) 12.2 Which of the following will migrate toward...
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
please help. thanks in advance!
6 Which of the following arrows correctly points to the anomeric carbon? 7. Of the following, what is the most likely reason that cooking with Nutrasweet (Aspartame) destroys the sweetness? HO-C-CH2-CH-C-N-CH-C-OCH NH2 CH2-CsHs Aspartame 8. A heptapeptide containing 2 alanine residues and one each of glutamine, phenylalanine, roline, tyrosine and valine was analyzed as follows: 1. Treatmen w 2,4-dinitrofluorobenzene followed by complete hydrolysis yielded 2,4-dinitrophenylalanine. 2. Partial hydrolysis with aqueous acid yielded the following fragments:...
please answer all the questions !
Question 16 Consider the Carvacrol molecule below and determine which class of terpenes it belongs in. OH monoterpene tetraterpene diterpene triterpene sesquiterpene Question 19 Predict the products when triacontyl hexadecanoate, a major component of beeswax, is treated with aqueous NaOH. CHỊCH, CHỊCH,CH, NaOH, Q. CHICHICOH CHACH.COM CHACH. ONA HACH MACONI CH3(CH2)14 COH + CH3(CH2)28CH2ONa CH3(CH2)14COH + CH3(CH2)28CH2OH I 11 CH3(CH2)14CNa + CH3(CH2)28CH2OH CH3(CH2)14CONa + CH3(CH2)28CH2OH IV II O O O O III IV none...
Which solvent(s) listed below would be satisfactory in Snl reactions? 0 o Н;С CH; DMSO H3C Н;С CH3CH2OH H DMF I II III a. I only b. II only c. III only d. I and II Oe. I and III f. II and III Og. All of the above What two products are expected in the following reaction? CH3 HBT H H BI CH CH; CH BI H Br I II III H Br Br H CH; CH IV V...
HELP Please!!!
Match the pka (determined in an unknown mixture of water and an organic solvent) with the correct acid: N=CH3 OH A D 0 F3C OH H3C H B E Eto OEt O2N-CH3 с F I. 0.8 II. 19.4 III. 28 What is the pka of A? What is the pka of B? What is the pka of C? What is the pka of D? What is the pka of E? What is the pka of F? IV. 15.7...
which of the following is the structure of
2-ethylbenzamide
3. (20 points) The following alcohol undergo chromic acid test. Complete the blank for each alcohol Color after reaction is test positive or negative? Class of Alcohol CH₂ - CHCH, CH, CH, ан,— —днан, Color after reaction is test positive or negative? Class of Alcohol Color after reaction is test positive or negative? Class of Alcohol at CH2OH & CH₂ CH3 6th c Color after reaction is test positive or negative?...
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