The answer is chromosome ....
        
             
        
        
        
Answer:
A
Synapse, also called neuronal junction,  its carries   of information through electric nerve impulses between two nerve cells (neuron)  or between a neuron and a gland or muscle cell (effector).
 
        
             
        
        
        
1. D 2.F. 3.G. 4.E. 5.H 6.C 7.I. 8.B. 9.A