Presentation on theme: "DNA RNA PROTEIN TRAIT Transcription & Translation Chapter 10."— Presentation transcript:
DNA RNA PROTEIN TRAIT Transcription & Translation Chapter 10
UNDERSTANDING RNA Ribonucleic Acid Single Stranded
A B C RNA Nucleotides A. Sugar (ribose) B. Phosphate Group C. Nitrogen Bases (ACGU)
Rules for Base Pairing in RNA: : B. Adenine:Uracil (A = U) A. Cytosine:Guanine (C G) RNA has Uracil (not Thymine)
DNA RNA Protein Trait 1. Transcription 2. Translation PROTEIN SYNTHESIS
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.