Question

Which of the following accurately describes the structure of DNA?

a. DNA consists of four bases: A, G, C, and U.
b. DNA is in the form of antiparallel strands twisted as a double helix.
c. A always pairs with C, and G always pairs with T.
d. DNA is made up of nucleotides, containing a phosphate group, a base, and another phosphate group.

Answer 1

DNA is in the form of antiparallel strands twisted as a double helix.

Answer 2

I think it's B. Because DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.