Answer:
B. An incoming charged tRNA binds to this site.
Explanation:
This is part of a process called TRANSLATION, in which mRNA is translated into proteins by the ribosomes, it comprises 3 stages: Initiation, Elongation, and Termination. 
 
The A site is part of the ribosome, which has 1 binding site for mRNA and 3 binding sites for tRNA: A: Aminoacyl or acceptor site; P: Peptidyl; E: Exit, and it´s involved in ELONGATION, where it binds to the Aminoacyl tRNA (charged tRNA), that has the aminoacid that´s going to be added.
 
        
             
        
        
        
Aluminum is 15 and copper is 35
        
             
        
        
        
Prophase I would be correct...
        
             
        
        
        
The center of the world is the equator
        
                    
             
        
        
        
Answer:
a,the ability to go from a single cell to multicellular organism