A metabolite is a substance produced during metabolism, which is the process by which living organisms convert food into energy and other necessary compounds. Metabolites can be classified into two main categories: primary metabolites, which are essential for growth and development, and secondary metabolites, which often play a role in plant defense or interaction with the environment.
These compounds are crucial for various biological functions and can be found in all living organisms, including plants, animals, and microorganisms. For example, glucose is a primary metabolite that provides energy, while alkaloids are secondary metabolites that can have medicinal properties.