Question

what part of the nucleotide should you look at if you are trying to determine if you are looking at a purine or a pyrimidine? examine the carboxyl group examine the sugar examine the nitrogenous base examine the phosphate group examine the amino group question 2 2.5 pts which of the following nitrogenous bases would not be used in the construction of a dna polymer? uracil adenine cytosine guanine thymine

Explanation:

1. Purines and pyrimidines are classified based on the structure of the nitrogen - containing bases in nucleotides. So, to determine if a nucleotide contains a purine or a pyrimidine, one should examine the nitrogenous base.
2. DNA contains the nitrogenous bases adenine (A), thymine (T), cytosine (C), and guanine (G). Uracil (U) is found in RNA but not in DNA.

Answer:

1. C. Examine the nitrogenous base
2. A. Uracil