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

What are globular proteins? Give their functions.

Classify the following proteins into fibrous and globular proteins.

 insulin, fibroin, myosin, collagen

What is the difference between starch and glycogen?

What type of bonding is present in $\mathrm{\alpha }$-helix configuration?

Draw open chain structure of aldopentose and aldohexose. How many asymmetric carbons are present in each?

Define and classify vitamins. Give at least two examples of each type.