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.
The main way in which the respiratory and the circulatory system work together is that the heart send blood to the lungs, which is then oxygenated, so the blood can then be sent to the rest of the body (after being pumped back through the heart).aking the world better, one answer at a time. The circulatory system transports oxygen through the body and the respiratory system supplies that oxygen. The respiratory system performs a process known as gas exchange that releases carbon dioxide from the body and brings in oxygen.