Download January 7, 2014 Notes Transcription: process of copying DNA into

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Transcript
January 7, 2014
Notes
Transcription: process of copying DNA into an RNA template. (Occurs in nucleus)
1.
2.
3.
4.
5.
DNA Helicase unzips the DNA
RNA polymerase assembles nucleotides according to base pairing rule. A-U, C-G.
RNA polymerase proof reads chain.
RNA ligase ties nucleotides together.
mRNA leaves the nucleus.
Translation:
1. mRNA travels to Ribosomes.
2. rRNA attaches to mRNA and serves as a book mark.
3. tRNA carrying an amino acid travels down the mRNA until its anticodon matches a
codon on mRNA. (Base Pairing Rule)
EX:
mRNA
A U G G GC A U U C C C A A G C G C U G A
Codon: (every three)
m- Messenger
r- Ribosome
t- Transfer