A, B,  because you have to round up
        
             
        
        
        
<span>The energy stored in each of these macromolecules varies because their chemical structures, and therefore their energy-storing bonds,differ.</span>
        
             
        
        
        
Answer:
Schwann cells or neurilemma cells are the cells which form the myelin sheath around neuronal axons in the peripheral nervous system (PNS) only.
Neurilemma is the collective term used for cytoplasm and nuclei present around the myelin sheath which helps in the regeneration process of nerves.
A Schwann cell surrounds the axon, invaginate it and the plasmalemma of the Schwann cells joins and from a double membrane structure called mesaxon. This mesaxon starts wrapping the axon in spiral fashion and cytoplasm start condensing into the compact myelin sheath.
 
 
        
             
        
        
        
Its gonna be false because u cant not do it
        
                    
             
        
        
        
Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader. 
indefinite article is used before a noun that is general or when its identity is not known.