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.
1 Respiratory System: This system provides the body with oxygen via gas exchange between air from the outside environment and gases in the blood. 2  Respiratory organs: lungs, nose, trachea, bronchi. 3  9. 4  Skeletal System: This system supports and protects the body while giving it shape and form.