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Give the full name, the 3-letter and 1-letter abbreviation of the following polypeptide.
Indicate the amino acid on the N- and the C-terminus of the structure.
Describe the structural characteristics that are common to all the amino acids that are
found in mammalian proteins and draw the structure of the tripeptide Tyr-Thr-Trp in the
ionic form that predominates at pH 7. Show all atoms (including hydrogens) as well as
any charges as necessary. Explain the general features of amino acid side chains and
the importance of associated non-covalent interactions.

significance of the structure of fatty acids on the solubility of lipids


Complete the following for threonine, lysine, and tyrosine.

a. Draw the amino acid.

b. Circle the side chain.

c. Identify whether it is polar, nonpolar, acidic, or basic.

d. At what pH will it exist as a zwitterion?

e. What is the range of pH values when it will be positively charged?

f. What is the range of pH values when it will be negatively charged?


 In the first stage of glycolysis, fructose-1,6-bisphosphate is

cleaved to form glyceraldehyde-3-phosphate and dihydroxy-

acetone phosphate. The latter molecule can then be con-

verted to glyceraldehyde-3-phosphate. Illustrate the

mechanisms whereby these reactions occur.




 List and discuss, in your own words, the four key parameters of the Michaelis–Menten Equation. Your response must clearly outline the definition of each of the parameters,and its application to enzyme activity/substrate interaction affinity/catalytic efficiency.


Explain why alcohols have higher boiling points than alkenes of about the same molecular weight


Describe how physical properties of amino acids affect protein structure?

 Liebermann-Burchard test. Explain the importance of each reagent used in this test.


Why does cyclization of D-glucose give two isomers of α- and β-D-glucose?


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