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6 Cards in this Set
- Front
- Back
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Step 1 of transcription |
RNA polymerase attaches to DNA and seperates the strands. 1 strand is then used as a template to make an mRNA copy. |
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Step 2 of transcription |
The RNA polymerase lines up free nucleotides. Complementary base pairing means the mRNA strand is a complementary copy of the DNA strand |
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Step 3 of transcription |
RNA polymerase moves down the DNA strand and assembles the mRNA strand and the hydrogen bonds reform. |
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Step 1 of translation |
The mRNA attaches itself to the a ribosome and the tRNA carry amino acids to the ribosome. A tRNA molecule with an anticodon attaches itself by complemetary base pairing. |
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Step 2 of translation |
A second tRNA molecule attaches to the next codon on the mRNA in the same way and the rRNA catalyses the formation of a peptide bond l between the 2 amino acids. The first tRNA molecule moves away. |
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Step 3 of translation |
This process continues until there's a stop codon. A polypeptide chain then moves awat from the ribosome and translation is complete. |
