One way is to see if it responds to stimulants or if it reproduces
        
             
        
        
        
It's depends on the size of molecule. big ones cannot pass the membrane while smaller molecules can. 
        
             
        
        
        
Answer:
Nuetral
Explanation:
There are bad mutations, but there are good mutations. Its all a part of natural selection.
 
        
             
        
        
        
the for sure answer is D)tendon 
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