A computer-implemented method for cellular modeling is provided. The computer-implemented method for cellular modeling may include generating a cellular model, the model comprising a plurality of compartments, each compartment comprising at least one reaction, at least one species, or a combination of at least one reaction and at least one species; receiving a selection of at least one compartment for simulation to obtain at least one selected compartment; simulating the at least one selected compartment to obtain a result; and providing an output of the result from simulating the compartment; wherein at least two of the compartments comprise parallel pathways through the cellular model.