Question

#1.Which of the following best identifies base 1? A) purine. B) pyrimidine. C) cytosine. D) nucleotide. #2. Which of the following could base 2 bind with? A) a purine. B) a guanine. C) an adenine. D) a pyrimidine.

Answer 1

Here are the list of nucleo bases : adenine , Thymine, Guanine , Cytosine

Adenine pairs with Thymine, and Guanine pairs with Cytosine

Adenine + Guanine = Purine
Thymine + Cytosine = Pyrimidine

So the answer for number 1 will be : Purine, since Adenine is not the choice

And the answer for number 2 is Guanine

hope this helps