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Proteins and chemical tests GapFill
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Inorganic ions in the cytoplasm of cells and in body fluids play important roles in the body. For example:
Amino acids are the monomers which form proteins. They all have the same basic structure of an amine group and group, but they differ in their R groups, or side chains. Polypeptides are formed by reactions, where many amino acids form a chain linked by bonds. This sequence of amino acids is known as the primary structure. Interactions between slightly positive H atoms and slightly negative atoms (usually O or N) are called , and these result in a chain twisting into or a beta-pleated sheet, which is the secondary structure. Further twisting and folding into the tertiary structure can occur as a result of ionic bonds, and hydrophobic or hydrophilic interactions, and sometimes more than one polypeptide chain may come together as the of the molecule. For example, insulin is a protein consisting of two chains forming a roughly spherical shape.
The chemical test for is called the biuret test. can be identified with a positive result of the emulsion test. Meanwhile, starch can be detected using .