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.

b., c., e. are the answers.

Purines have double rings, whereas pyrimidines have single rings.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

answer: c

explanation: