Structures of the Cell Quick Check.

Question

If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?
1. UUA
2. UAA
3. ATT
4. TAA

Answer 1

To determine the sequence of bases on the tRNA that corresponds to the mRNA codon AUU, we need to remember that tRNA anticodons are complementary to mRNA codons.

The mRNA codon AUU has the following bases:

• A pairs with U
• U pairs with A
• U pairs with A

So, the complementary tRNA anticodon sequence for AUU would be:

• UAA

Therefore, the correct answer is: 2. UAA