I believe it is D, all of these. :) I hope this helps! Please tell me if I'm wrong :)
        
                    
             
        
        
        
The nitrogen containing amino group is recycled while the remainder of the molecule is excreted in the urine
 
        
             
        
        
        
Answer:
The answer is C.
Explanation:
If the pressure is high enough, the cell would burst. In general, water would flow into the cell.
 
        
             
        
        
        
During the prophase the nucleoli in the nucleus disappear. The chromatin fibers become tightly ccoiled and condense into chromosomes. Chromosomes line up in pairs and are joined at the centromere. In the cytoplasm, the spindle fibers begin to formand are made of microtubules.