You know that you have a balanced chemical equation when the a. coefficients of the reactants equal the coefficients of the products.
b. products.
c. products and reactants are the same chemicals.
d. subscripts of the reactants equal the subscripts of the products.

The correct answer should be a

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's