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.
Insects do have a respiratory system. The using organs called spiracles to introduce oxygen from the atmosphere into their bodies. These spiracles then let oxygen flow into thâ¦e tracheal system which is a system of tubes that delivers oxygen to the parts of the body where it is needed. 4 people found this useful.