It would be the respiratory system
        
             
        
        
        
1 batería cell is the answer .
        
             
        
        
        
Answer: Hydrophilic 
Explanation:
They have a negatively charged polar head 
 
        
                    
             
        
        
        
Answer:
any use of electricity in the stadium
Explanation:
 
        
             
        
        
        
<span>s that a single on off switch can control the whole cluster of functionally related genes; these genes are coordinately controlled (ex: when Ecoli must make tryptophan for itself because the nutrient medium lacks this amino acid all the enzymes for the metabolic pathway are synthesized at one time)</span>