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Why does dna rely on rna?
Transcription is carried out by the DNA-dependent RNA polymerase that replicates the series of the DNA chain into RNA. To start transcribing the sequence, the RNA polymerase binds to the series of DNA called the promoter and divides the DNA strands. It then copies the sequence series into the messenger RNA copy until it hits the part of DNA named the Terminator, where it halts and detaches from the DNA. As with being DNA-dependent DNA polymerases, RNA polymerase II, this protein that transcribes most of these factors at the human genome, controls as part of the huge protein structure with multiple regulatory and accessory subunits.
Why can’t dna deliver the instructions to the ribosomes directly
Transcription begins at the nucleus, which is the mind of the cell. It contains DNA which include all the messages we want to create proteins. These messages are taken by those ribosomes outside the nucleus. DNA is also valuable to be run in the cell, it wants to be there as a kind of professional material. Then this cell gets another copy of it in the process called transcription.
Because the DNA can't leave the nucleus to send it's information across to other organelles of the cell.
Deoxyribonucleic acid functions in the cell
Deoxyribonucleic acid (DNA) is the genetic molecule of a cell that is found in the nucleus.
Ribonucleic acids (RNA) are equally genetic materials of the cell which has single-stranded chain of cells that processes protein. The types of RNA are:
- messenger RNA (mRNA),
- transfer RNA (tRNA), and
- ribosomal RNA (rRNA)
DNA is responsible for storing and transferring genetic information, while RNA (messenger) directly codes for amino acids and acts as a messenger between DNA and ribosomes to make proteins.
Therefore, because the DNA can't leave the nucleus to send it's information across to other organelles of the cell.
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