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Which base is NOT found in RNA?

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Question: Which base is NOT found in RNA?

Options:

  1. Adenine
  2. Cytosine
  3. Thymine
  4. Uracil

Correct Answer: Thymine

Solution: 

Thymine is not found in RNA; it is replaced by uracil.

Which base is NOT found in RNA?

Practice Questions

Q1
Which base is NOT found in RNA?
  1. Adenine
  2. Cytosine
  3. Thymine
  4. Uracil

Questions & Step-by-Step Solutions

Which base is NOT found in RNA?
Correct Answer: Thymine
  • Step 1: Understand that RNA is a type of nucleic acid, like DNA.
  • Step 2: Know that both RNA and DNA are made up of building blocks called nucleotides.
  • Step 3: Identify the four bases found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G).
  • Step 4: Learn that RNA has four bases as well: adenine (A), uracil (U), cytosine (C), and guanine (G).
  • Step 5: Notice that thymine (T) is present in DNA but is replaced by uracil (U) in RNA.
  • Step 6: Conclude that thymine is the base that is NOT found in RNA.
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