The narrator may be unreliable for many reasons. Some of the typical scenarios are: The narrator may be of a dramatically different age than the people in the story, such as a child attempting to explain adult actions. The narrator may have prejudices about race, class or gender. The narrator may have low intelligence.
Thus, proteins containing these amino acids would be made up of very small amounts of sulfur, in addition to the more common elements listed above. The five chemical elements of protein are, 1.) sulfur 2.) carbon 3.) hydrogen 4.) oxygen 5.) nitrogen.
By Anne Marie Helmenstine, Ph.D. Proteins are biological polymers, constructed from amino acids joined together to form peptides. Peptides subunits may bond with other peptides to form more complex structures. Multiple types of chemical bonds hold proteins together and bind them to other molecules. Here is a look at the chemical bonds responsible for protein structure. 1  Primary Structure (peptide bonds) - The primary structure of a protein consists of amino acids chained to each other. 2  Amino acids are joined by peptide bonds.