Question

what is the role of the structure shown here during protein synthesis?
a trna transports amino acids from the cytoplasm to the ribosomes for translation
b mrna delivers codons from dna in the nucleus
c rrna forms ribosomes
d mrna attaches to the ribosome

Explanation:

The structure shown is tRNA (transfer RNA). During protein synthesis (translation), tRNA has the role of transporting amino acids. It picks up amino acids from the cytoplasm and brings them to the ribosomes where the actual synthesis of the protein (based on the mRNA code) occurs. mRNA (messenger RNA) is involved in carrying the genetic code from DNA (after transcription) but the structure in the image is not mRNA. rRNA (ribosomal RNA) is part of ribosomes but again, the structure is not rRNA.

Answer:

A. tRNA transports amino acids from the cytoplasm to the ribosomes for translation