27. How many peptide bonds does the following artificial sweetener aspartame have? a. 1 b. 2 c. 3 d. 4
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Step 1: A peptide bond is a covalent bond that links two amino acids together. Show more…
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How many peptide bonds are in the following structural formula? a. 2 b. 3 c. 4 d. 5
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Aspartame, which is commonly known as NutraSweet™, contains the following dipeptide: a. What are the amino acids in aspartame? b. Give the three-letter abbreviation of the N-terminal amino acid. c. Circle the peptide bond. d. Draw the structure of the isomer of this dipeptide where the C-terminal and N-terminal amino acids are switched.
Madhur L.
Aspartame is a highly sweet molecule that is used in drinks that are devoid of sugar. Answer the following questions (45-49) about aspartame whose structure follows: 45. Aspartame is A. An amino acid. B. A tripeptide. C. A dipeptide. D. A dipeptide methyl ester. E. An amino acid methyl ester. 46. The constituents in aspartame are? A. Phenylalanine and aspartic acid B. Tyrosine and aspartic acid C. Glutamic acid and aspartic acid D. Tyrosine and glutamic acid E. Phenylalanine and glutamic acid. 47. Aspartame has ____ chiral center(s) and therefore in principle could exist as ____ stereoisomer(s). A. 1, 1. B. 1, 2. C. 2, 2. D. 2, 3. E. 2, 4. 48. Only one of the stereoisomers of aspartame is sweet because? A. It is recognized by a receptor in the brain, and only it is complimentary to the receptor. B. Only this isomer is complementary to a receptor on the tongue. C. It is broken down to phenylalanine which is sweet. D. It is broken down to methanol which is sweet. E. It is recognized by taste receptors in the stomach and only it is complimentary to the receptor. 49. What functional groups are present on aspartame? A. Ester, phenyl, amide, amine, carboxyl. B. Ester, phenyl, ketone, amine, carboxyl. C. Ester, phenyl, amide, amine, ketone D. Anhydride, phenyl, amide, amine, carboxyl. E. Ether, phenyl, amide, amine, carboxyl.
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