Answer:
Gap junctions
Explanation:
Gap junctions form pores that connect adjacent cells. In this way signaling molecules, ions and other substances can pass through the pore to the adjacent cell. This type of cell junctions are important in cardiac muscle responses, in brain signaling, during childbirth, etc.
 
        
             
        
        
        
Answer:
Even if you aren't friends with that account, I believe they will be able to receive the message. :) 
Explanation:
 
        
                    
             
        
        
        
Answer:
A 
Explanation:
Due to the hot weather the plants moisture start to decrease until they wilt. 
 
        
             
        
        
        
Answer:
Change in direction
Explanation:
"Rotation" refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object. 
 
        
             
        
        
        
Answer:
The given blank can be filled with interferons. 
Explanation:
The signaling molecules or the proteins that get discharged by the cell infected by the virus to protect the adjacent cells by stimulating a safeguarding defense mechanism are termed as interferons.  
The mentioned proteins obstruct the proliferation of viruses and thus helps the cell in getting rid of the infection. These molecules also assist in stimulating the macrophages and the natural killer cells.