Group of three bases on tRNA is called what?

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Study for the Leaving Certificate Biology Test. Prepare with flashcards and multiple-choice questions. Each question includes hints and explanations to enhance learning. Get ready to excel in your exam!

Multiple Choice

Group of three bases on tRNA is called what?

Explanation:
The concept being tested is the anticodon. On a tRNA molecule there is a three-base sequence, the anticodon, that pairs with a complementary three-base codon on the mRNA during translation. This pairing ensures the correct amino acid is added to the growing polypeptide chain. For example, a codon on mRNA like AUG pairs with the anticodon UAC on tRNA, bringing methionine. The other terms don’t fit here: a codon is the three bases on mRNA, exons are coding portions of genes, and introns are noncoding regions that are removed.

The concept being tested is the anticodon. On a tRNA molecule there is a three-base sequence, the anticodon, that pairs with a complementary three-base codon on the mRNA during translation. This pairing ensures the correct amino acid is added to the growing polypeptide chain. For example, a codon on mRNA like AUG pairs with the anticodon UAC on tRNA, bringing methionine. The other terms don’t fit here: a codon is the three bases on mRNA, exons are coding portions of genes, and introns are noncoding regions that are removed.

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