Question

the animation shows a ribosome (yellow oval - shaped structure) moving along an mrna strand (black strand with letter codons). several trna molecules (green, upside - down t - shaped structures) enter the ribosome, each labeled with an anticodon such as gag, ccu, or uuu. attached to each trna is a colored circle representing an amino acid. a chain of amino acids forms and extends from the ribosome. the process pauses when the ribosome reaches a stop codon (shown in red) on the mrna strand. which of the following best describes the role of trna during translation? select the best answer. it signals the ribosome to stop translation. it brings amino acids to the ribosome based on the mrna codons. it transcribes the dna into rna. it creates the mrna strand from the dna template.

Explanation:

• The first option is incorrect. Stop codons (not tRNA) signal the ribosome to stop translation.
• The second option is correct. tRNA has an anticodon that pairs with mRNA codons and brings the corresponding amino acid to the ribosome for protein synthesis.
• The third and fourth options are incorrect. Transcription (DNA to RNA, creating mRNA from DNA template) is done by RNA polymerase, not tRNA.

Answer:

It brings amino acids to the ribosome based on the mRNA codons.