This is Steve the Shark. He lives in the Arctic Ocean. He loves to swim around and eat all the fish he sees.
One day, Steve saw a delicious jellyfish drifting by. He opened his mouth to take a bite...
Yum! A jellyfish!
But the jellyfish lashed out with its tentacles, hitting Steve right by his gills.
The jellyfish's tentacles left a terrible scar on Steve's skin.
Ow! You stung me!
So Steve went to his doctor, whose name was Larry the Lobster, in hopes that he could make it go away.
It's going to be like this forever, Doctor!
Don't worry! Your cells will heal themselves!
Once the DNA is copied, the things that are needed for cell division are made. One of the things that are needed for splitting the cell are centrioles, which make the spindle fibers that are later used to pull apart the chromosomes.
First, they'll go through a step called interphase. In interphase, the cells grow, copy DNA, and prepare for division. When the cells are growing, they make more organelles. Organelles are parts of the cell that are needed for it to work. Just like you need you lungs and heart to live.After the cells are done growing, theymake a copy of the DNA, which is the instructions for making you look like you. Your DNA is the reason you mighht have blue or brown eyes. All the DNA is in the middle of the cell, which is separated by a thin wall. This area of the cell is called the nucleus.