To stop cell division when there isn’t enough food to support new growth/Om seldeling te stop wanneer daar nie genoeg kos is om nuwe groei te ondersteun nie

Organisms need to be able to stop cell division when the cell in question is damaged/Organismes moet seldeling kan stop wanneer die betrokke sel beskadig is

To start up cell division when growth or wound healing are needed/Om seldeling te begin wanneer groei of wondgenesing nodig is

Organisms need to be able to reproduce sexually/Organismes moet seksueel kan voortplant

Organisms need to produce enough nutrients for their cells/Organismes moet genoeg voedingstowwe vir hul selle produseer