Complex organic molecules are the building blocks of all known forms of life. These construct living creatures and are essential for their development and upkeep. Biomolecules are a specific kind of molecule. Biomolecules may be broken down into many categories, including carbohydrates, lipids, nucleic acids, proteins, enzymes, hormones, and so on. Metabolism is the rate at which a living organism’s cells undergo chemical reactions in order to produce energy for essential processes and new organic material. The unique ability of living things to take in and utilise energy from their environment to power processes like motion, development, and reproduction sets them apart from inanimate matter. Chemicals found in living things and essential for processes like cell division, morphogenesis, and development are collectively referred to as biomolecules. Both big macromolecules (or polyanions) and tiny molecules (primary metabolites, secondary metabolites, as well as natural products) are considered biomolecules. The term “biological materials” is used to describe substances of this kind. All living things rely on biomolecules. Exogenous biomolecules, including particular nutrients, are needed by many species despite the fact that endogenous biomolecules are created internally.