1. Q2 WK8 D3 & 4

2. How does DNA’s message travel OUT of the nucleus and INTO THE CELL, where the message gets expressed as a protein??? This is known as…

3. About RNA… RNA = Ribose Nucleic Acid Similar to DNA, but… Smaller & single stranded Sugar = “Ribose” NOT “Deoxyribose” 1 nitrogen base is different, Uracil; there is NO THYMINE in RNA Adenine, Uracil, Cytosine, Guanine

5. DNA to RNA Practice DRAW ME

7. Types of RNA used during Protein Synthesis 1.mRNA = Messenger RNA 2.rRNA = Ribosomal RNA 3.tRNA = Transfer RNA

8. What is “Protein Synthesis” ? Protein synthesis is the process of making a protein from DNA. There are 2 parts used during protein synthesis: 1. Transcription 2. Translation

10. Translation 1.The information in the mRNA is translated by a ribosome (made of rRNA) who “reads” it. 2. Transfer RNA (tRNA) enters the ribosome to drop off an amino acid 3. A chain of amino acids then exits the ribosome and folds into a protein

11. Protein Synthesis Animation http://www.youtube.com/watch?v=kgGVk9NExxw&feature=related Transcription and protein assembly

12. Class review!

13. Protein Synthesis coloring worksheet

14. Codon VS Anticodon CODON: 3 nucleotides in mRNA. Each codon will code for a single amino acid ANTICODON: 3 nucleotides in tRNA that pair to a codon

15. Codon VS Anticodon Video http://www.youtube.com/watch?v=B6O6uRb1D38

16. What are amino acids? Amino acids are the building blocks of proteins A chain of amino acids are needed to create a protein

17. The genetic code is used to determine the amino acid

18. Protein Synthesis

19. What happens to the chain? Individual amino acids bind together Folds up Becomes a protein

20. What is a Protein? Proteins are made of 20 different amino acids The sequence (pattern) of amino acids will vary between each protein The sequence of an amino acid will tell its shape, how to fold and its function (job)

21. Codon chart practice! DNA: A- T- T- G- C- A- G- A- T- G- C- A mRNA: rRNA: tRNA: Using the Codon Chart, find the amino acid of tRNA’s anticodon Amino Acid: ___________, ____________, __________ & ___________

22. Protein Synthesis Practice worksheet

23. Summary of Protein Synthesis 1.DNA opens 2.Free floating bases connect to the exposed DNA bases making mRNA (Transcription) 3.mRNA travels OUT of the NUCLEUS and into the CYTOPLASM 4.Ribosome (rRNA) “reads” the mRNA and a tRNA drops off an amino acid 5. The amino acid chain exits the ribosome and folds up into a protein