Answer:
A is pointing to the cell membrane. The cell membrane's main function is to provide protection for the cell as well as allow substances in and out of the cell due to selective permeability. 
Explanation:
Some other functions:
-Endocytosis and Exocytosis
-Cell Signaling
 
        
             
        
        
        
14. They get pollinated by animals, and birds that come to
        
             
        
        
        
With this x and y pair they are male
        
             
        
        
        
Answer: 6,000/30 = 200, so 200 molecules are required. 
Explanation: