INFER Which of the following statements describes the structure of nucleotides that
make up DNA? Select all correct answers.
a. All nucleotides have the same base.
b. All nucleotides have a phosphate group and deoxyribose.
c. Adenine has one more carbon-nitrogen ring than thymine.
d. Purines have one carbon-nitrogen ring.
e. Pyrimidines have one carbon-nitrogen ring.