Biological Molecules

The biological molecules or Biomolecule sare involved in metabolic activities of living bodies such as plants and animals. They are usually polymers or macromolecules which are composed by the polymerisation of monomer units. For example, proteins are composed of amino acids which are bonded with each other through peptide linkage. Peptide linkage is an amide linkage that is formed by condensation polymerisation with the elimination of water molecules. The monomer units of Biomolecules are organic molecules such as amino acids contain –NH2 and –COOH group whereas monosaccharide units are polyhydroxy aldehyde and ketones. Nucleic acids have 3 major components; phosphate group, nitrogenous base and a five membered sugar molecule. Biological molecules play an important role in the survival of living cells. For example,nucleic acids are involved in the transfer of genetic information and synthesis of proteins.Carbohydratesprovide energy to living cells for their activities.Proteinsare involved in different enzymes and structural units. Some of the Biomolecules like antibodies fight against foreign substances which are harmful for living cells. Let’s discuss some more important roles of biological molecules in the living bodies. The relation between biomolecules and living cells present in the organism is as follows.