Add to ORKGThe asymmetry of time is important to approach the cellular world, especially to understand stem cells and cancer. As the amount of energy involved in microscopic processes is so small, it is more difficult to argue that entropy increases, and therefore the direction of time becomes confusing and undefined at the molecular level. This is an extension of a previous work, where some details are specified and alternatives are proposed.Fil: Aquilano, Roberto Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Inge...