The right matches are:
2nd. ==> A peptide bond...
4th. ==> Once a protein...
3rd. ==> A chain of amino acids...
1st. ==> The first codon of mRNA...
Gene expression is the mechanism that groups together all the processes that lead to a functional product of the gene.
Transcription is the process of obtaining a strand of RNA from a strand of DNA.
Once the messenger RNA is mature, it is exported outside the nucleus, in order to recruit the ribosomes and proceed with the translation.
The nucleotides are read in groups of 3, the codons. Each codon encodes an amino acid, or allows to initiate or stop the translation.
Once the ribosome has settled on the mRNA strand, it will go through it until it finds the first AUG codon to start the translation. The ribosome will then read each codon, which will result in the production of an amino acid. This produces the production of an amino acid chain, in other words a protein. The translation ends when the ribosome encounters a stop codon.
So, at the end of this process, we get a functional product of the gene: a protein.