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CICLO CELULAR

DEFINICIÓN DE CICLO CELULAR

El ciclo celular es una serie de sucesos que experimentan las células cuando nacen, crecen y se multiplican de forman asexual.

Cuando una célula se multiplica o más precisamente cuando se divide, tiene que transmitir su información genética y demás organelos para que puedan sobrevivir sus descendientes. Esta trasmisión la lleva a cabo a través de una serie de fases que constituyen el ciclo celular.

El ciclo celular abarca desde un relativamente largo periodo de crecimiento (interfase) más un periodo corto de división (reproducción celular).

En el próximo capitulo se estudian las fases del ciclo celular.

DIFERENCIAS DEL CICLO CELULAR ENTRE CÉLULAS PROCARIOTAS Y CÉLULAS EUCARIOTAS

En las células procariotas el ciclo celular se lleva a cabo de manera mucho más sencillos que en las células eucariotas.

En las procariotas de manera general se divide el ADN contenido en el citoplasma, se separa en los extremos de la célula y después se divide la membrana plasmática para formar 2 células.

En las células eucariotas el ciclo celular se compone de varias fases, ya que como recordaras, estas células cuentan con un núcleo donde está contenido el ADN y muchos organelos bien diferenciados.

¡Ojo!

Algunas células del organismo se reproducen indefinidamente (como las células de la piel), otras lo hacen dependiendo si reciben ciertas señales (como las células de los huesos antes ciertas hormonas) y otras nunca se vuelven a reproducir como la mayoría del sistema nervioso.

¡Nota!

Las fases y los detalles del ciclo celular se estudian en los siguientes capítulos.

También están disponibles nuestras guías desarrolladas en formato digital.

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