Textbook Question
Each of the following statements about protein synthesis is false. Correct each to make a true statement.
In a gene, each nucleotide specifies one amino acid in a protein sequence.
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3. Energy & Cell Processes
Introduction to Translation
Multiple Choice
What happens to tRNA at the E site during translation?
A
tRNA exits the ribosome
B
tRNA forms a peptide bond with the growing polypeptide chain
C
tRNA is charged with a new amino acid
D
tRNA binds to the mRNA codon
Verified step by step guidance1
Understand the role of tRNA in translation: tRNA (transfer RNA) is responsible for bringing amino acids to the ribosome, where proteins are synthesized.
Learn about the ribosome structure: The ribosome has three sites for tRNA binding - the A (aminoacyl) site, the P (peptidyl) site, and the E (exit) site.
Identify 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, and the E site is where the tRNA exits the ribosome after its amino acid has been added to the chain.
Focus on the E site: At the E site, the tRNA no longer carries an amino acid and is ready to leave the ribosome, making room for the next tRNA to enter the A site.
Conclude the process: After the tRNA exits from the E site, the ribosome continues to move along the mRNA, facilitating the addition of new amino acids to the growing polypeptide chain.
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