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Transcription and Translation

In Transcription, the enzyme RNA polymerase travels to the nucleus. Once it arrives, it meets with a portion of DNA. RNA polymerase dissolves the hydrogen bonds that hold together the DNA molecule. Once the bonds are broken, the RNA polymerase reads the series of nitrogenous bases (of DNA) and creates corresponding nitrogenous bases. Those newly created nitrogenous bases make up the new polymer RNA. Once the process is completed, the hydrogen bonds are repaired and the RNA leaves the nucleus. In Translation, the RNA created during transcription is transported to the ribosome. The ribosome reads the RNA. Three nitrogenous bases makes up 1 codon. That codon codes for the creation of an amino acid. The type of amino acid is determined by the sequence of nitrogenous bases in the codon. The ribosome reads the entire RNA molecule, creating a polypeptide chain. When the process is done, the polypeptide chain leaves to perform its function, which is determined by its sequence of amino acids.

Channel: Science & Technology
Uploaded: November 30, 1999 at 12:00 am
Author: moman108

Length: 02:15
Rating: 4.00
Views: 1035

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