I think the answer to this is A but I’m not sure
The amino acids in a polypeptide chain are linked by peptide bonds. Once linked in the protein chain, an individual amino acid is called a residue, and the linked series of carbon, nitrogen, and oxygen atoms are known as the main chain or protein backbone.
Answer:
Be more specific
Explanation:
Describe what? I cant help you if you dont explain what you are talking about. :/
A mood and sensory altering drug.
Answer:
try to reduce life stressor
Explanation:
that was a guess btw
