Protein Synthesis

Transcription

The synthesis of RNA using DNA as a template

DNA Polymerase

Binds to site on DNA at the start of the gene being transcribed, unwinds double helix, links rna nucleotides with covalent bonds, detaches rna

Stability

The two strands of dna are only briefly separated, thus the bases are only briefly vaunerable to chemical changes that could cause mutation hence increases _____

Observable change

DNA → RNA → observable changes

Last

Transcription is the ____ stage in gene expression at which a gene can be switched on or off

Translation

Polypeptides synthesized through

One codon

3 rna bases

tRNA

Attaches to ribosome and turns each codon into an amino acid, then helping move the chain of amino acids to the next tRNA

5’ - 3’

Direction of Translation

5’ - 3’

Direction of Transcription