Multiple Choice
Which two important properties of a DNA molecule are essential for its biological function?
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7. DNA and Chromosome Structure
DNA Structure
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Which of the following is a nitrogenous base found in DNA?
A
Adenine
B
Uracil
C
Thymine
D
Cytosine
Verified step by step guidance1
Understand that DNA is composed of four nitrogenous bases: Adenine, Thymine, Cytosine, and Guanine.
Recall that Uracil is a nitrogenous base found in RNA, not DNA.
Identify that Adenine pairs with Thymine in DNA through hydrogen bonds.
Recognize that Thymine and Cytosine are also nitrogenous bases found in DNA.
Conclude that among the options given, Adenine is indeed a nitrogenous base found in DNA.
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