The study of which structure was instrumental in the formulation of the modern cell theory?
plant cell
animal cell
cell membrane
dna molecule

The correct answer is molecule of DNA.

Explanation:

Based on the cell theory, all the living components are formed of one or more kinds of cells. All the living cells arise from the prevailing cells by the process of differentiation. The cell is the fundamental unit of composition and function in all living beings.  

Based on the novel version of the Cell theory, the energy flow conducts between the cells, all the cells possess similar chemical composition, and the DNA or the genetic information is passed on from one cell to another. Therefore, the study of the molecule of DNA played an essential function in the origination of modern cell theory.  

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.