Hey guys, so today we are going to continue to talk about ...CELLS! Yes, cells but I am going to teach or help you review on how cells reproduce.

        
        Well first of all 1 cell divides to make 2 identical copies called daughter cells. This is called mitosis. There are 4 phases to mitosis: prophase, metaphase, anaphase and telophase. 

     

  
Now first the cell has to go through interphase before it can start the cell cycle of reproduction. In Interphase the cell gets bigger and so does some of its organelles. They get bigger because they are about to be cut into 2 and they should both be the size of normal cells. Interphase is technically not part of the cell cycle but plays a part in it, without it the cell cycle would be thrown off path and would have to change. 

       The first stage in mitosis is prophase, where the chromosomes, in the cell are visible. The spindle fibers attach to the centromeres, in the chromosomes and attach to the ends of the cells. The next stage is metaphase, where the chromosomes line up in a straight line across the cell. 



























       Aw my hands really hurt because I just played tug of war at the shreiner field day. The third stage of mitosis is anaphase and here the spindle fibers "play a game of tug of war"using the chromosomes. Man these spindles are probably really strong!(except the fact that they are microscopic ;) The spindle fibers pull the chromosomes to the opposite ends of the cell. 

       You are now going to learn about the last stage of mitosis, telophase. Here the cell membrane begins to "pinch"(hehe aubrey) to divide the cytoplasm and the 2 new daughter cells. But the cell isn't completely divided into 2 cells, they are still attached together. So the next step is called cytokinesis. Cytokinesis is like interphase, where it plays a part in mitosis but is not considered part of the 4 steps. Here the cell fully splits on half, creating 2 daughter cells.

I can't let you go witout some links now can I? 
 Click here for games and quizzes on the blog topics
Click here for a video on mitosis

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