Answer:
Animal cells and plant cells  
 
        
             
        
        
        
Answer:
I think the answer is B i might be mistaken though c:
Explanation:
 
        
             
        
        
        
Surprisingly, nothing.
Without changing the characteristics of the light bulb, it's not actually possible to change the voltage without changing the current as well. When the voltage is increased, the current through the bulb has to increase as well in order to make it glow brighter.