A method and apparatus is described for generating a test case for an application or system modelled using a Stochastic Automata Network model. The present invention provides methods and compositions relating to altering cellulose synthase levels in plants. In exemplary embodiments, the present disclosure provides for improved portable, disposable, cost effective, efficient andor easy-to-use air activated systemsmethodsassemblies for rapidly elevating the temperature of liquids andor foods in a container or vessel.