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Multiple Choice
During translation, where does the tRNA that is no longer holding an amino acid go?
A
A site of the ribosome
B
Nucleus
C
P site of the ribosome
D
E site of the ribosome
Verified step by step guidance
1
Understand the process of translation: Translation is the process by which ribosomes synthesize proteins using mRNA as a template. It involves the assembly of amino acids into a polypeptide chain.
Identify the role of tRNA: Transfer RNA (tRNA) molecules bring amino acids to the ribosome, matching their anticodon with the codon on the mRNA strand to ensure the correct amino acid sequence.
Learn about the ribosome sites: The ribosome has three sites for tRNA binding - the A (aminoacyl) site, the P (peptidyl) site, and the E (exit) site.
Determine the function of each site: The A site is where the tRNA carrying the next amino acid binds. The P site holds the tRNA with the growing polypeptide chain. The E site is where the tRNA, now without an amino acid, exits the ribosome.
Conclude the path of tRNA: After the tRNA has transferred its amino acid to the growing polypeptide chain in the P site, it moves to the E site before exiting the ribosome, as it no longer holds an amino acid.