Question

There are twenty different types of _____________ which join together in differing sequences and numbers to form different proteins.

Answer 1

i thought there were twenty diferent types of (D)

Answer 2

There are .................... of AMINO ACIDS which join together ........................
Amino acids are the building units of protein. There are basically twenty different types of amino acids which are divided into two classes of essential and non essential amino acids based on their requirements in human nutrition. These amino acids joined together in different manner to form different types of proteins.