Answer:
the chromosome are found in the nucleus of a body cell in pair
 
        
             
        
        
        
Enzymes are proteins and they control the speed of chemical reactions in your body. Without them, the reactions would happen too slowly to keep you alive. 
Some break down larger molecules into smaller ones and those enzymes are in your stomach. 
        
             
        
        
        
Answer: 
A low cold front transitioning to a high warm front.
Explanation:
The spikes that are going down is a cold front and the semi-circles are a warm front so its transitioning from small to large because L is low and then it raises. You're welcome.
 
        
                    
             
        
        
        
Answer:
tetrads change orientation as a lineup along the center of the cell