Question

DNA is made up of:
4 chains of paired nucleotides
2 chains of 4 nucleotide groups
2 chains of paired nucleotides
none of the above

Answer 1

i would go with the second one cuz

DNA and RNA consists of nucleic acid chains called nucleotides. Nucleotides are composed of three units: base, sugar (monosaccharide) and phosphate. Bases are found in both DNA and RNA. 

Answer 2

your answer is C : 2 chains of paired nucleotides.

FOR SURE