Nucleotides contain sugar, a phosphate group, and a nitrogen base. Which of the following is a nitrogen base?(1 point)
Responses
Ribose
Ribose
Guanine
Guanine
Tyrosine
Tyrosine
Deoxyribose
Responses
Ribose
Ribose
Guanine
Guanine
Tyrosine
Tyrosine
Deoxyribose