A eukaryotic cell that is 10% saline is placed in a solution. The eukaryotic cell swells. Which is most likely the percent of salt in the solution in which the cell was placed?

For the answer to the question above,
 DNA is made up of two nucleotide strands. The nucleotides are connected together by covalent bonds within each strand. The sugar of one nucleotide forms a covalent bond with the phosphate group of another. The two strands themselves are connected by hydrogen bonds. The hydrogen bonds are found between the bases of the two strands of nucleotides. Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine. This is called complementary base pairing