The anwser of d I’m sure of it
        
                    
             
        
        
        
Answer:
i think its a im not sure though
 
        
             
        
        
        
Answer:
The correct answer is to ADP and Pi is the most common mechanism for transferring free energy to drive endergonic reactions.
Explanation:
Many endergonic reactions(the free energy change of these reactions are highly positive) proceed in a thermodynamically unfavorable manner.
      To make those reactions thermodynamically favorable,these reactions are coupled with hydrolysis of high energy compound such as hydrolysis of ATP to ADP and Pi.
     As a result the free energy change of those reactions becomes negative which allow those reactions to proceed in a thermodynamically favorable manner.
 
        
             
        
        
        
Answer:
An ionic bond is formed by transfer of electrons between metals and non-metals.
Explanation:
Ions that have opposite charges will form an ionic bond in such a way that total charge on the compound is 0.
 
        
                    
             
        
        
        
Chemical energy, hope this helps. Correct me if im wrong but im sure its chemical energy