Answer:
4600-4500 million years ago, the Earth formed and its crust cooled to become solid. 4500-4400 million years ago, the oldest known thing to have formed on Earth, zircon, formed along with solid crust and oceans. 4200-4100 million years ago, the close of the Hadean Period (there are no surviving rocks).
Oxygen combines with carbon of simple sugar.
A bacterial promoter sequence must be included. The coding exons control the actual production of the protein that the gene codes for; meanwhile, the promoter sequence serves to initiate transcription of the specific genes. Promoters are included upstream of the DNA molecule at the start site of the gene.
Rough endoplasmic reticulum is the site of the synthesis of proteins destined for export from the cell.
