Wednesday, November 30, 2011

Scribe Post 11/30/11


Today In Class....
  1. DNA-mRNA-tRNA worksheet
  2. Picked up a Content Quiz
  3. Answered questions
  4. Watched a few videos on transcription and translation
  5. Did the in class activity: DNA models

HOMEWORK:
  • 99-110 in UP
  • Extra Credit: Lab 37 (should you choose to do it!)
  • STUDY FOR QUIZ FRIDAY AND TEST MONDAY!!!!
NEXT SCRIBE: CHRISTINA****

1.DNA-mRNA-tRNA worksheet
  • Practice on sequencing DNA to amino acids
  • MAKE SURE WHEN DOING SO, YOU USE m-RNA FOR THE CHART**
  • If absent, it can be picked up in the classroom
2. Content Quiz
  • Practice for the test
  • If absent, can be picked up in the classroom
3. Answered Questions
  • If you began the homework and had any questions, you could ask them then
  • If you are doing the homework now and still have questions, make sure to keep them somewhere to ask in class tomorrow!**
4. Watched a few videos...
5. In Class Activity: DNA models.
  • Created a DNA model using plastic tubes and connecters resembling the pieces of DNA
    • This is an example of what it looked like.
  • Then we went on to replicate protein synthesis.
  • This lasted until the end of the period.
  • GOOD LUCK GUYS!!


    Tuesday, November 29, 2011

    Scribe Post for Tuesday, 11/29


    Today in Class:
    -Finished DNA Notes (Page 10 – 19)

    Homework:
    -UP p. 99-110 (including UP p. 108A-B) due Thursday
    -EC- Lab #37 due Thursday

    Some Important Things in the Notes:
    •RNA v. DNA
    - RNA has
    1. Ribose Sugar
    2. 1 Strand
    3. Uracil instead of Thymine
    4. Smaller size than DNA- can go inside/outside nucleus
    5. 3 types: mRNA, tRNA, rRNA

    •Transcription- A molecule of DNA is copied into a complementary strand of mRNA


    Steps of Transcription:
    1 .)    Initiation
    2 .)    RNA Elongation
    3 .)    Termination

    A little animated video of Transcription: http://www.youtube.com/watch?v=aiPHi1d_t5w&feature=related

    •Processing RNA
    -       - In Eukaryotes, to process RNA need extra nucleotides or cap and tail to protect the RNA and help the ribosomes recognize it as mRNA
    -     -   Introns-noncoding regions (Removed before the RNA leaves the nucleus)
    -    -  Exons-coding regions

    •Translation-Translating the mRNA code into tRNA with the corresponding AA’s; Takes place in ribosome

    Steps of Translation:
    1 .)    Initiation
    2 .)    Elongation
    3 .)    Termination

    Another animated video on Translation: http://www.youtube.com/watch?v=5bLEDd-PSTQ&feature=related

    Codons-consist of three bases; used in the translating of mRNA



    Above is a chart for all the triplet codons
    61 codons for Amino acids
    AUG=met and start
    3 are stop codons (No amino acids)

     And I think that’s all!
    Don't forget the test is on Monday!
    NEXT SCRIBE: **Olivia**