<span>I think you might be asking about the 3 different osmotic conditions a cell might find itself in.  Isotonic is the normal cell environment where water moves in and out of the cell freely and equally in both directions.  It is in osmotic equilibrium so to speak.  The concentration of water and solutes is equal on both sides of the cello membrane.  In a hypotonic solution the cell will gain water and swell up -...</span>
        
             
        
        
        
Answer:
Vacuole. A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance.
Explanation:
 
        
                    
             
        
        
        
Answer:
2a and -5a
8 and -4
hahahah they are separate from each other
2a and -5a simplifies to -3a
8 and -4 simplifies to 4
Explanation:
hope this helps!
 
        
             
        
        
        
Because the cells can only use energy in form of ATP.
Its like you can't run a diesel truck on petrol.