A nonfunctioning protein will be produced
        
                    
             
        
        
        
Melting ice caps and glaciers
        
             
        
        
        
Answer:
B. ATP
Explanation:
The ATP is the type of useful energy that the cells need. 
 
        
                    
             
        
        
        
I would say man made but not to sure with out answer choices..
        
                    
             
        
        
        
The proteins(particularly enzymes) of the membrane help chemical reactions. 
An example would be enzymes involved in electron transport chain.