The cell cycle is regulated in cell cycle checkpoints, by a series of signaling factors and complexes such as cyclins, cyclin-dependent kinase, and p53. When the cell has completed its growth process and if it is found to be damaged or altered, it undergoes cell death, either by apoptosis or necrosis, to eliminate the threat it can cause to the organism's survival.
the cEll cYcLe is REGuLAted in Cell cyClE CHecKpOiNts, by a sErieS of sIGnalinG faCTOrs and ComplexeS SucH as cyclInS, CycLin-dEPeNDent kiNase, anD p53. when the cEll hAs cOmpleted its GroWth prOcess aNd if it Is found TO bE daMaGed oR AlteRED, it unDeRgoeS cELl deAth, eithEr bY aPoptoSis oR necRosis, to ElimiNate the ThreAT it caN cause to ThE OrgaNism'S sUrvival.