Embedded Files
This section includes the IB topic 2.7
This section includes the IB topic 2.7
- Semi-conservative replication of DNA
- Meselson and Stahl's DNA replication experiments
- Helicase
- DNA polymerase
- PCR
- Transcription
- Translation
- mRNA and the genetic code
- Codons and anticodons
2.7_Vocabulary.pdfReplication
Replication
PCR (Polymerase Chain Reaction)
PCR (Polymerase Chain Reaction)
Transcription
Transcription
Transcription and gene expression.
Transcription and gene expression.
transcription-direction.mpeg.mp4Translation
Translation
Transcription and translation: from genes to proteins (gene expression)
Transcription and translation: from genes to proteins (gene expression)
Watch this video between the minutes 0:30 and 6:30. It is really cool!
Transcription steps (tiny summary from the video):
Transcription steps (tiny summary from the video):
- mRNA binds to the small subunit of the ribosome
- A tRNA with a Methionine amino acid binds to the AUG codon
- The large subunit of the ribosome assembles with the small subunit, the mRNA and the tRNA
- The tRNA holding Methionine is in the ribosome
- A new tRNA holding another amino acid enters into the ribosome
- The ribosome moves along the mRNA.
- A peptide bond is formed by the ribosome between each two amino acids.
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