is there more information?
 
        
             
        
        
        
If you don't have atp you would be pluralized <span />
        
             
        
        
        
Answer:
They use a hard shell, but not hard enough though because we humans can get through them hehehe
 
        
             
        
        
        
Answer;
-Organizing the mitotic spindle in cell division
Explanation;
-A centriole is an organelle that helps cells divide, or make copies of themselves. Centrioles are only found in animal cells. All centrioles are made of protein strands called microtubules. Centrioles are made of nine triplets of microtubules arranged in a cylinder.
-The main purpose of a centrosome is to organize microtubules and provide structure for the cell, as well as work to pull chromatids apart during cell division.
 
        
             
        
        
        
Yes A is the correct answer