I believe it is b.) so amino acids.
        
             
        
        
        
Answer:
I believe True would be correct
Explanation: Enzymes are catalysts which speed up chemical reaction.
 
        
             
        
        
        
A vein. This is because veins carry deoxygenated blood back to the heart.
        
                    
             
        
        
        
a lot of alligator's body shapes are common and the same type of things