![The side chain contains different 20 amino acids for the different types of proteins and the non- polar hydrophobic group contains following amino acids](https://www.gkseries.com/blog/wp-content/uploads/2022/01/The-side-chain-contains-different-20-amino-acids-for-the-different-types-of-proteins-and-the-non-polar-hydrophobic-group-contains-following-amino-acids.png)
Q. The side chain contains different 20 amino acids for the different types of proteins and the non- polar hydrophobic group contains following amino acids ………………………………………….
A. Alanine
B. Glycine
C. Methionine
D. All of them
Answer: All of them.