Question Detail

BIO 101 Last Min Prep Objective Question

Question

Purines are made up of: a. cytosine and guanine b. adenine and guanine c. adenine and cytosine d. cytosine and uracil
Options
A cytosine and guanine
B adenine and guanine
Correct Answer
C adenine and cytosine
D cytosine and uracil
Correct Answer

Option B is the correct answer.

Detailed Explanation

The purine bases are adenine and guanine. They are characterized by a two-ring structure. Cytosine, thymine, and uracil are pyrimidines (single-ring).

Hint

They are the 'bigger' bases with two rings.

Question Info