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4/23/12

4/23/12. In your notebook, finish the questions from the laminated sheet. (Pg 47 side only) READ THE DIRECTIONS CAREFULLY!! 2. When finished, answer the questions from the half sheet in your notebook. THESE ARE WORTH 30PTS. 4/26/12 Bell Ringer. 1. What are the 4 nitrogen bases of DNA?

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4/23/12

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  1. 4/23/12 In your notebook, finish the questions from the laminated sheet. (Pg 47 side only) READ THE DIRECTIONS CAREFULLY!! 2. When finished, answer the questions from the half sheet in your notebook. THESE ARE WORTH 30PTS

  2. 4/26/12Bell Ringer 1. What are the 4 nitrogen bases of DNA? 2. What 3 things make up a nucleotide? 3. Make the complementary DNA strand of the following: ATCCGATCAGGTTA 4. What is the process of making a copy of DNA called?

  3. The DNA Connection (11.1)

  4. DNA (Deoxyribonucleic Acid) 1. Double Stranded 2. Sugar Phosphate backbone 3. Four nitrogen bases • Adenine (A) • Thymine (T) • Cytosine (C) • Guanine (G)

  5. What Does DNA Do Codes for proteins and traits like a recipe for that organism!! HOW? 1. Replication 2. Transcription 3. Translation

  6. REPLICATION

  7. From DNA to a Protein Transcription and Translation (11.2)DNA RNA PROTEIN (Nucleus) (Ribosome)

  8. RNA (Ribonucleic Acid) Takes the information from DNA and uses it to assemble proteins.

  9. DNA vs. RNA

  10. DNA OR RNA?

  11. 2Types of RNA 1. Messenger RNA (mRNA) Copies the coded message from the DNA ; Carries the message to the ribosome. 2. Transfer RNA (tRNA) Carries amino acids to the ribosome and adds them to the growing protein.

  12. TRANSCRIPTIONDNA RNA

  13. Cells use information from a gene to produce a specific protein. • Takes place on a ribosome in the cytoplasm of a cell

  14. How does the genetic information from inside of the nucleus get to the ribosome?

  15. 3 Step Process of TRANSCRIPTION 1. DNA molecule unzips in the region of the gene to be transcribed.

  16. 2. RNA bases match up along one of the DNA strands. Adenine (A) ------ Uracil (U) Guanine (G) ------ Cytosine (C)

  17. 3. mRNA strand breaks away and the mRNA strand leaves the nucleus

  18. How is mRNA translated into proteins?

  19. TRANSLATIONRNA PROTEIN

  20. 1. A ribosome attaches to a mRNA strand and tRNA molecules begin to carry in amino acids

  21. The mRNA strand is read 3 letters at a time • Each 3 letter group is called a codon and codes for a specific amino acid.

  22. 2. tRNA molecules have an anti-codon that forms a base pair with the mRNA codon

  23. 3. tRNA molecules continue to bind to the mRNA and leave behind amino acids that bind to one another

  24. 4. This process will continue until the ribosome reaches the final codon of the mRNA

  25. 5. The amino acid chain is released and twists into its protein form.The protein then is ready to be used as needed

  26. Transcription and Translation Summary

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