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Home Q & A Board Science-Related Homework Help Chemistry Organic Chemistry
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jesshalavi jesshalavi
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2 years ago

Question 1.

Which of the given choices is the correct sequence of the tetrapeptide that is formed by the reaction sequence shown?

An illustration shows an incomplete chemical reaction. The reactant has a central carbon atom bonded to a chlorine atom and to a polymer, reacts in presence of the following compounds as shown in two forward arrows. The first arrow has a compound that comprises of three-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to an oxygen atom carrying a negative charge. C 2 is dash bonded to a methylene group which is further bonded to a hydroxyl group, O H. C 3 is replaced by an N H group and is also bonded to B o c. The second forward arrow has a compound trifluoroacetic acid, C F 3 C O O H.


An illustration shows three forward arrows with chemical compounds. The compound placed above the first arrow comprises of a three-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is dash bonded to a methylene group which is further bonded to P h. C 3 is replaced by an N H group and is also bonded to B o c. The compound placed below the first arrow is D C C. The compound placed above the second forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the third forward arrow comprises of a three-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is dash bonded to a methyl group. C 3 is replaced by an N H group and is also bonded to B o c. The compound placed below the third arrow is D C C.

An illustration shows four forward arrows with chemical compounds. The compound placed above the first forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the second arrow comprises of a three-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is dash bonded to a methylene group which is further bonded to S H. C 3 is replaced by an N H group and is also bonded to B o c. The compound placed below the second arrow is D C C. The compound placed above the third forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the fourth arrow is hydrogen fluoride H F.


▸ Cys-Phe-Ala-Ser

▸ Ser-Phe-Ala-Cys

▸ Ser-Ala-Phe-Cys

▸ Cys-Ala-Phe-Ser

▸ none of these

Question 2.

Which of the given choices is the correct sequence for the pentapeptide that is formed by the reaction sequence shown?

An illustration shows an incomplete chemical reaction. The reactant has a central carbon atom bonded to a chlorine atom and to a polymer, reacts in presence of the following compounds as shown in three forward arrows. The first arrow has a compound that comprises of a three-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to an oxygen atom carrying a negative charge. C 2 is dash bonded to (C H 2) 2 S C H 3. C 3 is replaced by an N H group and is also bonded to B o c. The second forward arrow has a compound trifluoroacetic acid, C F 3 C O O H. The compound placed above the third forward arrow is B o c - glycine and below the arrow is D C C.

An illustration shows four forward arrows with chemical compounds. The compound placed above the first forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the second arrow is B o c - A l a and below the second arrow is D C C. The compound placed above the third forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the fourth arrow is B o c - L y s and below the arrow is D C C.

An illustration shows four forward arrows with chemical compounds. The compound placed above the first forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the second arrow is B o c - L e u and below the second arrow is D C C. The compound placed above the third forward arrow is trifluoroacetic acid, C F 3 C O O H. The compound placed above the fourth arrow is hydrogen fluoride, H F.


▸ Cys- Gly-Ala-Lys-Leu

▸ Leu-Lys-Ala-Gly-Cys

▸ Leu-Lys-Ala-Gly-Met

▸ Met-Gly-Ala-Lys-Leu

▸ none of these
Textbook 
Organic Chemistry

Organic Chemistry


Edition: 4th
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Cow5215Cow5215
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jesshalavi Author
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2 years ago
this is exactly what I needed
bbbbbbbh
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Yesterday
Thanks for your help!!
annielin111
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2 hours ago
Thanks
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