Answer:
The site on the ribosome where aminoacyl tRNA enters is called the A site (or the acceptor site). The A site is the location on the ribosome where the incoming aminoacyl tRNA binds to its complementary codon on the mRNA, bringing the correct amino acid into position to be added to the growing polypeptide chain. The A site is located on the large subunit of the ribosome, next to the P site (peptidyl site) and the E site (exit site). During translation, the ribosome moves along the mRNA in the 5' to 3' direction, with tRNAs entering the A site, forming peptide bonds in the P site, and exiting from the E site.
Step-by-step explanation: