Your cells have to divide when you're growing, to heal wounds, and to replace dead cells. But how do cells know when to divide and when not to divide? We can't have cells just growing willy-nilly! That's what cancer is, and that's bad. Luckily, cells obey something called the cell cycle, which is regulated by a variety of signaling molecules, which tell the cell when to divide and when to chill out. Let's look at the phases of this cycle and some of its regulatory mechanisms now.
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The Cell Cycle and its Regulation
Теги
biologycell biologymolecular biologythe cell cyclefirst gap phasesynthesis phasesecond gap phasecell cycle control systemmitosiscell divisiondaughter cellgenomeDNA replicationchromatinchromosomeshistonesnucleosomessister chromatidscentromereprotein kinasecyclincyclin-dependent kinasephosphorylationgrowth factorsdensity-dependent inhibitioncancertumorgenetic mutationgene expression
