Eukaryotic vs Bacterial Transcription & translation

Start codon in Bacteria

f-methionine

Start codon in Eukaryotes

methionine

How many proteins are coded by one mRNA in the Bacterial cell

several

How many proteins are coded by one mRNA in the Eukaryotic cell

one

Where does transcription occur in the Eukaryotic cell?

Nucleus

Where does transcription occur in the Bacterial cell?

Cytoplasm

Can Eukaryotic cells do transcription and translation at the same time?

No (bacteria can)

In eukaryotic cells, the region of the genes that code for Proteins is called

Exons

The segments on split genes of eukaryotes that DO NOT code for polypeptide (regulatory functions)

Intron

What structures are taken out of the pre-mRNA (eukaryotes) before proceeding to translation

introns (non protein coding)

A type of RNA and protein called a _______ recognizes the exon-intron junctions and enzymatically cuts through them

spliceosome

The action of this splicer enzyme loops the intro into lariat-shaped pieces, excises them, and joins the exons end to end. In this way, a strand of mRNA with NO INTRON material is produced.

Action of Spliceosome