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.
Building Blocks of Proteins. Quick revise. Like carbohydrates and lipids, proteins contain the elements carbon (C), hydrogen (H) and oxygen (O), but in addition they also always contain nitrogen (N). Sulphur is often present as well as iron and phosphorus. Before understanding how proteins are constructed, the structure of amino acids should be noted.