객관식
In the DNA double helix, what molecules form the sides of the “ladder” (the backbone)?
83
views
7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
Which nitrogenous base is not found in DNA?
A
Uracil
B
Thymine
C
Adenine
D
Guanine
검증된 단계별 안내1
Recall the four nitrogenous bases found in DNA: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Understand that DNA and RNA differ in one of their nitrogenous bases; DNA contains Thymine, while RNA contains Uracil instead of Thymine.
Identify that Uracil is a nitrogenous base found only in RNA and not in DNA.
Compare the options given: Uracil, Thymine, Adenine, and Guanine, and recognize that Uracil is the base absent from DNA.
Conclude that the nitrogenous base not found in DNA is Uracil.
Related Videos
Related Practice
