Textbook Question
Write a single sentence, using no more than 25 words, to summarize each of the following cellular processes:
Translation
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3. Energy & Cell Processes
Introduction to Translation
Multiple Choice
At which site do new aminoacyl tRNAs enter the ribosome during elongation?
A
E site
B
A site
C
R site
D
P site
Verified step by step guidance1
Understand the process of translation in protein synthesis, which occurs in the ribosome and involves the decoding of mRNA to build a polypeptide chain.
Recognize that the ribosome has three sites for tRNA binding: the A (aminoacyl) site, the P (peptidyl) site, and the E (exit) site.
During the elongation phase of translation, new aminoacyl tRNAs, which carry specific amino acids, enter the ribosome at the A site.
The tRNA at the A site pairs with the mRNA codon, ensuring the correct amino acid is added to the growing polypeptide chain.
After the peptide bond formation, the ribosome translocates, moving the tRNA from the A site to the P site, and the empty tRNA exits from the E site.
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