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 gaseous exchange of oxygen (O2) and carbon dioxide (CO2) occurs within the lungs. Oxygen is inhaled through the mouth and nose, it passes through the bronchi, which branch â¦ off into smaller airways called bronchioles.It is at the ends of these bronchioles where the Alveoli are, (tiny, pear shaped sacks).he gaseous exchange of oxygen (O2) and carbon dioxide (CO2) occurs within the lungs. Oxygen is inhaled through the mouth and nose, it passes through the bronchi, which branch â¦ off into smaller airways called bronchioles.