The answer would be B for this question. ATP is used by the mitochondria the “power house” of the cell.
        
             
        
        
        
DNA replication is said to be semi-conservative because of this process of replication, where the resulting double helix is composed of both an old strand and a new strand. ... Semiconservative replication would produce two copies that each contained one of the original strands and one new strand.