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Protein Synthesis

Protein Synthesis. Remember: DNA Replication. How does DNA make all of our characteristics?. Genes make proteins…. Nucleic Acids. To make proteins, we need both types of nucleic acids: DNA and RNA. Deoxyribonucleic Acid. Ribonucleic Acid. Nucleic Acids.

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Protein Synthesis

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  1. Protein Synthesis

  2. Remember: DNA Replication

  3. How does DNA makeall of our characteristics? Genes make proteins…

  4. Nucleic Acids • To make proteins, we need both types of nucleic acids: DNA and RNA Deoxyribonucleic Acid Ribonucleic Acid

  5. Nucleic Acids Wherever DNA has the base thymine, RNA has the base uracil.

  6. 3 Typesof RNA • Messenger • mRNA • Transfer • tRNA • Ribosomal • rRNA

  7. Protein Synthesis • The process of reading DNA to make proteins is called protein synthesis.

  8. The Central Dogma of Genetics says that genetic information goes from DNA  RNA  Protein.The steps of the Central Dogma are: 1. DNA Transcription2. RNA Translation3. Protein Folding.

  9. Step 1: Transcription An mRNA strand is formed from the DNA. Just like in DNA Replication, helicaseunzips the DNA and RNA Polymerase builds the new mRNA strand.

  10. Three letters in a row on the mRNA is called a codon. The matching three letters on tRNA is called an anticodon.

  11. Step 2: Translation Ribosomesread the mRNA. A tRNA molecule with the right anticodon matches up to the mRNAcodon and attaches the correct amino acids to the chain.

  12. Protein Folding Once the amino acid chain is complete, it leaves the ribosome and goes through the Rough ER and the Golgi Apparatus to be folded in to its protein shape.

  13. Check Your Understanding How is RNA different from DNA? What does the Central Dogma of Genetics say? What are the two steps of Protein Synthesis and what happens in each step? RNA is a single strand, has ribose sugar instead of deoxyribose, and uses the base uracil instead of thymine. DNA  RNA  Protein Transcription – DNA is transcribed (copied) into mRNA Translation – mRNA is translated into an amino acid chain

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