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.
30.1 Respiratory and Circulatory Functions Oxygen-poor blood Oxygen-rich blood The respiratory and circulatory systems work together to maintain homeostasis. â¢ The circulatory system transports blood and other materials. âbrings supplies to cells âcarries away wastes âseparates oxygen-poor and oxygen-rich blood