A biomolecule is a loosely used word for molecules present in organisms that are essential to one or more typically biological processes such as cell division, morphogenesis, or development. Biomolecules include large macromolecules such as proteins, carbohydrates, lipids, and nucleic acids as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more familiar name for this class of material is biological materials. Biomolecules are usually endogenously produced within the organism but organisms usually need exogenous biomolecules. Biomolecules are an organic molecule that includes carbohydrates, protein, lipids, and nucleic acids. They are important for the survival of living cells. Some valuable biomolecules have huge demand, which cannot be fulfilled from their renewable resources. All of the biomolecules that make up our cells are made up of strings of monomers. For example, proteins are made up of strings of amino acids and nucleic acids are strings of nucleotides. The biomolecules, proteins, carbohydrates, and nucleic acids are all polymers.