REVIEW EXERCISES

Optical rotations of some compounds along with their structures are given below which of them have D-configuration.

Structure of a disaccharide formed by glucose and fructose is given below. Identify anomeric carbon atoms in monosaccharide units.

Three structures are given below in which two glucose units are linked. Which of these linkages between glucose units are between ${\mathrm{C}}_1$ and ${\mathrm{C}}_4$ and which linkages are between ${\mathrm{C}}_1$ and ${\mathrm{C}}_6$

Name the vitamins whose deficiency causes skin diseases.

Name the $\mathrm{\alpha }$-amino acid which is optically inactive.

What is glycosidic linkage? Draw the structure of maltose showing glycosidic linkage.

What is peptide linkage? Explain the secondary structure of proteins.

What is the basic structural difference between starch and cellulose?