Cells at Work (Hataraku Saibou)
        
             
        
        
        
Answer:
I dont know what your experiment is but the control variable is the thing your keeping the same.
Explanation:
 
        
             
        
        
        
Mitosis never stops in most of the cells of our body like "Gastrointestinal tract", "that give rise to blood cells" etc.
But, it stops after the death of the body.
Hope this helps!
        
             
        
        
        
<span>Professor Kwang Jeon observed that some amoebas in his invaded amoeba colonies survived thanks to changes made by the invading bacterias. This comfirmed the endosymbiotic theory that organells are formerly invading free living prokaryotes forms that were integrated and swallowed by others to form a new living unit.</span>