Final answer:
In prokaryotes, an mRNA molecule, the first tRNA, and the small ribosomal subunit form the initiation complex during the first stage of translation. The initiator tRNA carries N-formyl-methionine and binds to the start codon on the mRNA.
Step-by-step explanation:
An mRNA molecule, the first tRNA, and the small ribosomal subunit are the components that make up the initiation complex during the first stage of translation in prokaryotes. This complex involves the small ribosomal subunit, the mRNA template, initiation factors, and a special initiator tRNA. The initiator tRNA is charged with the amino acid N-formyl-methionine and is responsible for binding to the start codon on the mRNA template.The large ribosomal subunit then joins this complex to complete the ribosome assembly for protein synthesis. Following the formation of the initiation complex, the large ribosomal subunit binds to it, leading to a fully functional ribosome that carries out protein synthesis.