Sagot :
Answer:
1.Adenine(A), Cytosine(C), Guanine(G), and Thymine(T)
2.Nitrogen base is one part of the nucleotide while there are four nucleotides that differ on it,and there are thymine,adenine,cytosine,guanine.
3.Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, the thymine is replaced by uracil (U).
4.Yes,adenine can only pair with thymine because of their chemical structures.
5.Yes,guanine can only pair with cytosine because of their chemical stuctures.
6.sugar and phospate,nitrogen.
Explanation: