A piece of cheese contains protein. Proteins are natural polymers made up of amino acids. There are 20 naturally occurring amino acids. The structures of two amino acids are shown below.

a. Name the type of polymerisation involved in protein formation.

b. Draw a structural formula to represent the part of the protein chain formed by the reaction between the amino acids shown above.

c. What is the name given to the common linkage present in protein molecules?

d. Why is there such a huge variety of proteins?

e. Name and describe the features of the two broad groups of proteins.

Transcribed Image Text:

glycine alanine H H H,N-C-COOH H,N-C-COOH CH3