Together, molecules form much larger complexes like mitochondria, lysosomes, and centrioles. these are collectively referred to as

organelles

Explanation:

Small structures present within a cell that perform specific functions are called organelles. The organelles present within the prokaryotic as well as eukaryotic cells is embedded within the cytoplasm. The organelles may or may not be enclosed in membranes, however, the prokaryotes lack membrane-bound organelles.Thus, mitochondria, lysosomes, and centrioles are all examples of different organelles that are present within a cell.

They are organelles is that what you want?