Abstract: The ntcc calculus has been proposed as a formalism for modeling concurrent systems such as biological systems. In this paper we explore the expresiveness of the ntcc calculus for modeling, simulating and analyzing biological systems. A legitimate question is therefore: Is it possible to model membrane systems with ntcc? In this paper as our main contribution to the solution of this question, we propose a general mechanism for modeling membrane systems in ntcc. The application of that mechanism is illustrated with a model for the LDL cholesterol degradation pathway using membrane systems defined in ntcc.