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>
One way is to share your problems with a friend or parent and tell them how you are feeling. Get plenty of sleep as well and eat healthy, avoid any alcohol and drugs. Hope this helped.
The waste products of respiration are Co2 and H20.
