Scelta multipla
Unlike DNA, RNA contains the nitrogenous base:
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7. DNA and Chromosome Structure
RNA
Scelta multipla
Unlike DNA, RNA contains which nitrogenous base?
A
Cytosine
B
Adenine
C
Uracil
D
Thymine
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Recall the four nitrogenous bases found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G).
Understand that RNA also contains adenine (A), cytosine (C), and guanine (G), but instead of thymine (T), it contains a different base.
Identify that the base unique to RNA, which replaces thymine, is uracil (U).
Recognize that uracil pairs with adenine during RNA base pairing, similar to how thymine pairs with adenine in DNA.
Conclude that the nitrogenous base present in RNA but not in DNA is uracil.
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