Those are 8 principles of living things:
The first, the living things consist of chemicals, such as carbohydrate, lipid, protein, and nucleate acid.
Secondly, the living things consist of cell.
Thirdly, body of the living things has the structures which concerned with function.
The fourth is the existence of energy and other substances to live.
Fifth is biodiversity. The living things have unity in biodiversity and continuity. They have interacted to each others.
Sixth is homeostasis, the living things could defend on internal condition.
Seventh is living things could do a reproduction, because of genome.