Truly modern molecular biology emerged with the uncovering of the structure of DNA in the 1960s and concurrent advances in biochemistry and genetics. Molecular biology is one of three primary molecular-scale biological sciences, the others being biochemistry and genetics.
1 Students should know the parts and functions of the circulatory and respiratory systems and how they work together for respiration. 2  Students should also understand what homeostasis is and that all living things must be able to maintain homeostasis.
Making the world better, one answer at a time. humans breathe in oxygen and we let out carbon dioxide, a plant breathes in carbon dioxide and lets out oxygen the stoma, which is a pore, lets out gases and takes in gases.