The correct order of living units from smallest to largest are: 1) Molecule 2) Organelle 3) Cell 4) Tissue 5) Organism 6) Population. A molecule<span> is the smallest particle in a chemical element that has the chemical properties of that element or compound. </span>An organelle<span> is a tiny cellular structure that performs specific functions within a cell. Meaning they are smaller than cells. A cell </span><span>contains the fundamental molecules of life and of which all living things are composed of. </span>Tissue is <span>a group of cells found together in the body. Organisms are made up of organs, which are made up of tissues. It </span><span>is a living thing that can function on its own. </span><span>Population are groups of living things that live together in a particular area. They are capable of interbreeding.