2. Protein Synthesis

3. Write the complementary DNA strand for each of these DNA strands: DNA GAATTACA CCAATTAG ATAGACAG CCAGTACA DNA

4. http://www.pbs.org/wgbh/aso/tryit/dna/shockwave.html Here is a practice website if you are connected to the internet:

5. Each of the 96 columns represents one DNA sequence. A different colored dye attached to each of the four nucleotides.

6. Replication

7. Semi-Conservative Replication Each strand of the original molecule acts as a template for the synthesis of a new complementary DNA molecule

8. With semi-conservative replication, each new strand is ½ new and ½ old

9. Examples of DNA Replication

10. RNA (ribo-nucleic acid)

11. Differences between DNA and RNA 1.Different sugars (DNA=deoxyribose) (RNA=ribose) 2.RNA is single stranded (1 side) DNA is double stranded (2sides) 3.RNA has “U” (uracil) DNA has “T” (thymine)

12. Always remember… RNA loves U

14. Write the RNA strand for each of these DNA strands: ½ Strand of DNA GAATTACA CCAATTAG ATAGACAG CCAGTACA RNA

15. Transcription The process by which DNA is copied into mRNA

16. mRNA Messenger RNA, is the copy of the DNA that goes from the nucleus to the ribosome

17. FACT Proteins are made up of amino acids

18. tRNA Transfer RNA, matches up with mRNA and has an amino acid on its top

19. CODON Each combination of 3 nucleotides on a strand of mRNA

21. ANTICODON Each combination of 3 nucleotides on a tRNA

23. Translation The decoding of a mRNA message into proteins

25. rRNA Ribosomal RNA, glues together all of the amino acids into a polypeptide chain

29. For a great link on protein synthesis go to: http://www.biostudio.com/demo_freeman_protein_synthesis.htm http://www.pbs.org/wgbh/aso/tryit/dna/# http://tidepool.st.usm.edu/crswr/protsynthmov.html http://www.ncc.gmu.edu/dna/ANIMPROT.htm http://www.eolas.ca/Micro_2.htm http://www.lewport.wnyric.org/jwanamaker/animations/Protein%20Synthesis%20- %20long.html

30. Table of Codons