객관식
In DNA structure, what is the name of the sugar found in the backbone of DNA?
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7. DNA and Chromosome Structure
DNA Structure
객관식
Which nitrogenous bases are found in DNA?
A
Adenine, thymine, cytosine, and uracil
B
Adenine, thymine, cytosine, and guanine
C
Thymine, cytosine, guanine, and uracil
D
Adenine, uracil, cytosine, and guanine
검증된 단계별 안내1
Recall that DNA is composed of four nitrogenous bases which pair specifically to form the double helix structure.
Identify the two categories of nitrogenous bases: purines and pyrimidines. Purines include adenine (A) and guanine (G), while pyrimidines include cytosine (C), thymine (T), and uracil (U).
Understand that uracil (U) is found in RNA, not DNA, so it should be excluded when listing DNA bases.
Recognize that the four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).
Confirm that adenine pairs with thymine, and cytosine pairs with guanine in the DNA double helix.
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