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.
Best Answer: The respiratory system. The lungs and heart do work together in the respect that the veins deliver unoxygenated blood to the lungs to get oxygenated. The arteries then take this oxygenated blood to the organs.The heart is what is pumping or circulation the blood.Source(s): I am a respiratory therapist.est Answer: The respiratory system. The lungs and heart do work together in the respect that the veins deliver unoxygenated blood to the lungs to get oxygenated. The arteries then take this oxygenated blood to the organs.