Answer:
eukaryote
Explanation:
That small, dark circle in the center of the cell is the nucleus .Prokaryotes do not have nucleus.
  
        
             
        
        
        
That would be the Thymus Gland.
        
                    
             
        
        
        
Ribosomes. Ribosomes which synthesize proteins are found in the rough endoplasmic reticulum.
 
        
                    
             
        
        
        
What experiment? Id prob say popularity