Question

In eukaryotic cells, protein synthesis in the cytoplasm utilizes three types of RNA molecules. Which of the following

contains a three nucleotide sequence called the anticodon?
a. mRNA
b. tRNA
c. rRNA
d. all of the above

Answer 1

In eukaryotic cells, the RNA molecule that contains the anticodon is transfer RNA (tRNA). It is responsible for matching the correct amino acid to the codon on the messenger RNA (mRNA) during protein synthesis.

Step-by-step explanation:

In eukaryotic cells, protein synthesis involves three types of RNA molecules, each with a unique function in the process. The RNA molecule that contains a three nucleotide sequence known as the anticodon is transfer RNA (tRNA). The anticodon on tRNA pairs with the complementary codon on messenger RNA (mRNA) during translation, ensuring that the correct amino acid is added to the growing polypeptide chain. Messenger RNA (mRNA) carries the genetic code from the nucleus to the ribosome in the cytoplasm, but it does not contain anticodons. Instead, mRNA contains codons which code for amino acids. Ribosomal RNA (rRNA) combines with proteins to form ribosomes, the site of protein synthesis, but also does not contain anticodons.

The statement in the question that asks which type of RNA contains the anticodon applies specifically to the tRNA.