Mitosis: it’s how cells divide!

Mitosis: Making Copies

Today’s lesson was all about copying…not each other’s work, but cells! Students learned that mitosis – the act of one cell splitting to become two identical cells – happens in humans all the time.

In mitosis, the nucleus of a cell splits to start the process of making two cells that were identical in every way to the parent cell. This type of cell division is incredibly important for life on earth. Without mitosis, our cuts wouldn’t heal and our bodies wouldn’t grow!

An onion left in water for several days will grow out new roots due to mitosis. In class today we observed and drew the phases of mitosis in an onion root tip under the microscope. Some students were even able to stain their own root tip slides. 

Ask your student what their favorite phase of mitosis is when you see them!

And if you visit the Microscope Imaging Station in the Exploratorium, have them tell you all about the exhibit. 


La Mitosis: haciendo copias

En la lección de hoy hablamos acerca del copiar. No sobre copiar la tarea de nuestros compañeros, sino de copiar células. Los estudiantes aprendieron que la mitosis, proceso por el cual una célula se divide en dos idénticas, ocurre todo el tiempo en los humanos.

Durante la mitosis, el núcleo de una célula se divide primero para luego comenzar el proceso de crear dos células que son completamente idénticas a la célula parental. Este tipo de división celular es importantísimo para la vida en la Tierra. Sin la mitosis, nuestras heridas no sanarían y nuestros cuerpos no crecerían.

Pregúntele a su hija o hijo cual fue su fase favorita de la mitosis.



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