Protein Synthesis
Amino acids are joined together into a protein chain by which of the following?

Transfer RNA
Messenger RNA
DNA polymerase
Hydrogen bonds

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Protein Synthesis
The first step in translation is

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

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