During protein synthesis,amino acids are positioned in the proper sequence by molecules of
A) ribosomal RNA.
B) transfer RNA.
C) messenger RNA.
D) nuclear RNA.
E) DNA.

Question

Quizplus · Accepted Answer

Transfer RNA (tRNA) molecules are responsible for positioning the correct amino acid at the correct position in the growing polypeptide chain during protein synthesis. Ribosomal RNA (rRNA) and messenger RNA (mRNA) also play important roles in protein synthesis, but they are not directly involved in positioning the amino acids. Nuclear RNA and DNA are involved in transcription, the process by which mRNA is synthesized from DNA, but they are not directly involved in protein synthesis.

During Protein Synthesis,amino Acids Are Positioned in the Proper Sequence