Protein Synthesis
The direction of amino acid transfer to the growing polypeptide chain is

from the A site to the E (exit tRNA site) site on the ribosome
from the A (aminoacyl tRNA site) site to the P (peptidyl tRNA site) site on the ribosome
from the P site to the A site on the ribosome
from the P site to the E site on the ribosome

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Protein Synthesis
The first step in translation is

binding of the two ribosomal subunits to each other
binding of tRNA to the small ribosomal subunit
binding of mRNA to the two ribosomal subunits
binding of mRNA to the small ribosomal subunit

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