The answer is Vacuoles. After water enters this cell through the osmosis, it expands to absorb water and contract to release it.
        
             
        
        
        
I think the answer is non reactive. As the outer shells gets filled ,valency decreases, so reactivity also decreases.
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A decomposition reaction occurs when ionic or covalent bonds are broken and elements and or ions or simpler molecules are formed.
        
             
        
        
        
Active transport uses energy passive transport does not..... active transport moves from lower to higher concentration and vice versa in passive transport.... both use carrier proteins....