Multiple Choice
In the context of DNA structure, what are the building blocks (monomers) of DNA and RNA?
100
views
7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
Which set of nitrogenous bases is found in DNA?
A
Thymine, uracil, cytosine, and guanine
B
Adenine, uracil, cytosine, and guanine
C
Adenine, thymine, cytosine, and uracil
D
Adenine, thymine, cytosine, and guanine
Verified step by step guidance1
Recall that DNA is composed of four nitrogenous bases, which are divided into two categories: purines and pyrimidines.
Identify the purines in DNA: adenine (A) and guanine (G).
Identify the pyrimidines in DNA: cytosine (C) and thymine (T).
Note that uracil (U) is not found in DNA; it is found in RNA instead, replacing thymine.
Therefore, the correct set of nitrogenous bases in DNA includes adenine, thymine, cytosine, and guanine.
Related Videos
Related Practice
