They are buried in the core of the structure.
I would say A or C I’m not sure but if I had to choose A or C my best guess would be A
I hope this helps :)
Can i get a picture of the question
Amino acids are known to be the building blocks of proteins. Amino acids are organic substances and organic substances contains carbon. Amino acids have an amine group and the carbonyl group (-OH) which contains nitrogen and oxygen respectively. Proteins can also be derived from other sources like meat. Proteins can perform different functions, being an antibody is one.