Why is the chemical composition of elements in a living organism more complicated than in a non-living one?

The chemical composition of even bacteria or protists is much more complex than the natural composition of any inorganic substance. To ensure life processes, macronutrients and micronutrients are needed. There are also ultramicroelements. This is practically the entire periodic table in one living cell. Moreover, all substances are in complex bonds with each other. Most inorganic objects and substances are a mixture of some molecules that can interact with each other in chemical reactions, change or decay.