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Honors Biology SOL.BIO.6f

Protein Synthesis: Transcription & Translation. Honors Biology SOL.BIO.6f. Making Proteins!. Cell Structure The cell is 80% protein. Why do We Need Proteins?. DNA Template for making mRNA during Transcription *The template strand is the DNA strand being copied.

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Honors Biology SOL.BIO.6f

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  1. Protein Synthesis: Transcription & Translation Honors Biology SOL.BIO.6f

  2. Making Proteins!

  3. Cell Structure • The cell is 80% protein Why do We Need Proteins?

  4. DNA • Template for making mRNA during Transcription *The template strand is the DNA strand being copied What do we need for protein synthesis?

  5. RNA A) mRNA = messenger RNA • Makes and takes copy of DNA to the cytoplasm B) tRNA = transfer RNA • Brings the anticodons to pair with the codons on the mRNA strand What do we need for Protein Synthesis?

  6. Ribosome • Amino Acids • Building blocks of proteins • Protein = AA chain • ORDER MATTERS!! What do we need for Protein Synthesis?

  7. Transcription (Writing the “message”) • DNA -> mRNA Location = Nucleus Steps: • Enzyme binds to DNA, unzips it • mRNA copy is made from DNA template *U replaces T in RNA* mRNA complements known as codons • Only 3 nucleotide “letters” long Steps of Protein Synthesis

  8. mRNA -> tRNA -> protein (AA chain) • Location= cytoplasm First codon in mRNA is the start codon AUG Translation

  9. 1. mRNA moves to the cytoplasm and binds with ribosome • 2. tRNA brings the anticodon to bind with the Codon • 3. Ribosome moves down to mRNA to next codon • 4. tRNA anticodon brings & attached next AA with peptide bond (Elongation) • 5. tRNA leaves ribosome once AA attached • Attached amino acid that is carried from cytoplasm to ribosomes • http://wn.com/protein_synthesis_animation STEPS TO tRANSLATION

  10. Protein Synthesis

  11. Now let’s practice!

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