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From Gene to Protein. DNA Review. Is made of nucleotides. Contains deoxyribose sugar Thymine, Guanine, Cytosine, Adenine Is a double stranded molecule. Example: A A T G G C T A T A C C G. RNA Review. Is made of nucleotides. Contains ribose sugar

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dna review
DNA Review
  • Is made of nucleotides.
  • Contains deoxyribose sugar
  • Thymine, Guanine, Cytosine, Adenine
  • Is a double stranded molecule.
  • Example: A A T G G C T A T A C C G
rna review
RNA Review
  • Is made of nucleotides.
  • Contains ribose sugar
  • Replaces Thymine with the base Uracil.
  • Is a single stranded molecule.
  • Example: A A U G G C U A U A C C G
what is the job of rna
What is the JOB of RNA?
  • To assist in the synthesis of proteins.
explore 2
Explore 2
  • Designer Babies
explain
Explain:
  • Amino Acids – the building blocks of proteins.
  • Many amino acids linked together make up the many different proteins in our body.
  • DNA contains the code for these proteins and RNA’s assemble the parts.
protein synthesis overview
Protein Synthesis: overview
  • Transcription: synthesis of RNA under the direction of DNA (mRNA)
  • Translation: actual synthesis of a polypeptide under the direction of mRNA
rna getting ready to do its job
RNA Getting Ready to Do its Job
  • There is NOT just one RNA molecule!!!!

THERE ARE THREE!!!

  • 3 types of RNA molecules:

1. Messenger RNA (m-RNA)

2. Transfer RNA (t-RNA)

3. Ribosomal RNA (r-RNA)

  • Each RNA molecule has a specific job in making a protein
m rna transcribes the dna
m-RNA(Transcribes the DNA)
  • Messenger RNA copies the code for a protein from DNA.
  • This is called TRANSCRIPTION

(Only Occurs INSIDE of the Nucleus of a Cell)

  • Takes code to the ribosome where the protein will be made.
  • m-RNA is divided into smaller units called CODONS.
what is a codon
What is a Codon?
  • Codon - series of 3-nucleotide ‘words’ found on the mRNA for ONE amino acid
  • The genetic instructions are ‘written’ in the DNA as a triplet code
translation now occurs
Translation NOW Occurs
  • Translation
    • Interpretation or Decoding of the protein code from DNA
  • Occurs in the cytoplasm of the cell
  • NOT THE NUCLEUS
  • Involves mRNA, as well as,

tRNA and rRNA

t rna slide 1 transfer rna
t-RNA, Slide 1(Transfer RNA)
  • Carries the specific amino acid to the ribosome.
  • Each t-RNA will hook up with a codon.
  • One or more t-RNA for each amino acid.
  • Attach to the codon and have an area called an ANTI-CODON.
trna slide 2
tRNA, Slide 2
  • The three letter code on the tRNA is called an Anticodon
  • This code translates what amino acid should be made
translation summary
Translation Summary
  • mRNA from nucleus is ‘read’ along its codons by tRNA’s anticodons at the ribosome in the cytoplasm
  • tRNA anticodon (nucleotide triplet); brings ONE amino acid
ribosomes and rrna ribosomal rna
Ribosomes and rRNA (ribosomal RNA)
  • Ribosomes
    • Protein factories
    • Only Non-membrane bound organelle
  • rRNA
    • What makes up the ribosomes of the cell.
    • Found in high concentration in the nucleolus of the cell’s nucleus.
elaborate
Elaborate
  • DNA Article with Codon Table
  • Guided Practice using the Codon Table
  • Building a Protein Synthesis Manipulative