\[ **BT: [[life#levels of biotic organisation]]** ] --- # molecules [[Two or more atoms combine to form a molecule, e.g. water molecules, proteins, sugars. Thus, molecules are the building blocks of all living things.]][^1] [^1]: Lindsay M. Biga et al., *[[Biga, Anatomy and Physiology, 2019|Anatomy & Physiology]]* (Oregon State University, 2019), chap. 1.2, <https://open.oregonstate.education/aandp/chapter/1-2-structural-organization-of-the-human-body/>.