[ **up: [[Matter and energy]]** ] --- # Molecules [[2024-0815. Two or more atoms combine to form a molecule.|'Two or more atoms combine to form a molecule, such as the water molecules, proteins, and sugars found in living things. Molecules are the chemical building blocks of all body structures.']][^1] [[2024-0815. Molecules are the chemical building blocks of all body structures.|Molecules are the chemical building blocks of all body structures.]][^2] [^1]: Lindsay M. Biga, et al., ‘1.2. Structural Organization of the Human Body’,*Anatomy & Physiology* (Corvallis, OR: Oregon State University, 2019), https://open.oregonstate.education/aandp/chapter/1-2-structural-organization-of-the-human-body/. [^2]: Lindsay M. Biga, et al., ‘1.2. Structural Organization of the Human Body’, *Anatomy & Physiology* (Corvallis, OR: Oregon State University, 2019), https://open.oregonstate.education/aandp/chapter/1-2-structural-organization-of-the-human-body/.