DNA RNA PROTEIN TRAIT Transcription & Translation Chapter 10.
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Transcript of DNA RNA PROTEIN TRAIT Transcription & Translation Chapter 10.
Rules for Base Pairing in RNA::
B. Adenine:Uracil (A = U)
A. Cytosine:Guanine (C G)
RNA has Uracil (not Thymine)
Transcription In the nucleus Makes a copy of DNA
into mRNA (messenger RNA)
Translation Happens in ribosome Ribosomes are in the
cytoplasm and on Rough ER
Uses instructions on mRNA to make protein
Transcription: DNA to mRNA
RNA polymerase binds to DNA.
DNA unwinds and separates.
Complementary RNA nucleotides are added.
Let’s Watch:http://
vcell.ndsu.nodak.edu/animations/transcription/movie.htm
Translation: mRNA to protein Happens in the ribosome
in the cytoplasm
Uses instructions on mRNA to make a protein
mRNA codes for an amino acid and tRNA delivers it
The Triplet Code: Codon Chart
mRNA is read in sets of three nucleotides called CODONS. Example: AAG
Each codon “codes” for an amino acid. Example: Lysine
The codons on mRNA give the order of amino acids to make a protein.
Transfer RNA: tRNA
Codon 3 nucleotides on
mRNA
Anti-codon 3 nucleotides on
tRNA Complementary to
the codon
tRNA has anticodon on one side and amino acid on other
tRNA anticodon binds to codon on mRNA and attaches correct amino acid to the growing polypeptide chain.