Question

what is the function of trna?
○ catalyze the assembly of amino acids into a protein
○ carry genetic instructions for building a protein
○ bring an amino acid to the ribosome

Explanation:

1. Analyze the first option: Catalyzing the assembly of amino acids into a protein is the function of ribosomes (with rRNA and ribosomal proteins), not tRNA.
2. Analyze the second option: Carrying genetic instructions for building a protein is the function of mRNA (messenger RNA), which carries the genetic code from DNA to the ribosome.
3. Analyze the third option: tRNA (transfer RNA) has an anticodon that pairs with the codon on mRNA and carries the corresponding amino acid to the ribosome during translation, where protein synthesis occurs.

Answer:

C. bring an amino acid to the ribosome (Note: Here we assume the options are labeled as A, B, C in order. So the correct option is the third one, which we can denote as C. bring an amino acid to the ribosome)