Scelta multipla
One of the primary functions of RNA molecules is to:
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7. DNA and Chromosome Structure
RNA
Scelta multipla
In RNA, which nitrogenous base is present that is not found in DNA?
A
Uracil (U)
B
Adenine (A)
C
Thymine (T)
D
Guanine (G)
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Recall the four nitrogenous bases found in DNA: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Recall the four nitrogenous bases found in RNA: Adenine (A), Uracil (U), Cytosine (C), and Guanine (G).
Compare the bases in DNA and RNA to identify which base is unique to RNA and not found in DNA.
Note that Thymine (T) in DNA is replaced by Uracil (U) in RNA.
Conclude that Uracil (U) is the nitrogenous base present in RNA but not found in DNA.
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