Answer:
I can't open it.
Explanation:
I'll help if you send a screenshot.
Two amino acids<span> are linked together by the formation of a </span>peptide<span> bond. </span>Amino acids<span> joined by a series of </span>peptide bonds to make<span> a </span>peptide<span> chain. Thus , a protein molecule is a </span>polypeptide chain <span>composed of many </span>amino acid residues<span>.</span>
Enzymes. They don't need it
I think the answer is Quartz
