1. http://www.scientificpsychic.com/fitness/transcription.gif Objective: Outline the 3 key parts to RNA transcription.

2. The Activation of DNA: A 2-Part Story Part 1: Transcription WHEN A PORTION OF DNA BECOMES ACTIVATED, THE FOLLOWING THINGS TAKE PLACE: #1 A PORTION OF DNA IS SELECTED FOR ACTIVATION. #2 DNA CAN NOT LEAVE THE NUCLEUS. #3 A COPY IS MADE OF THE PART OF DNA TO BE ACTIVATED. IT IS CALLED mRNA (messenger RNA)

3. DNA compared to RNA DNARNA How many strands? 21 Nucleotide subunit Deoxyribose sugar Ribose sugar Bases Thymine (T) Adenine (A) Guanine (G) Cytosine (C) Uracil (U) Adenine (A) Guanine (G) Cytosine (C) Phos- phate Group Deoxy- ribose Sugar Nitro- gen Base Phos- phate Group Ribose Sugar Nitro- gen Base T – A G – C U – A G – C

4. TRANSCRIPTION: THE PROCESS BY WHICH THE INFORMATION ON A GENE OR PORTION OF DNA IS TRANSFERRED TO AN RNA MOLECULE. THIS TAKES PLACE INSIDE THE NUCLEUS. REMEMBER, DNA ITSELF CAN NOT LEAVE THE NUCLEUS.

5. STEPS OF TRANSCRIPTION #1 RNA polymerase (in charge of converting a part of DNA to mRNA) “lands” on an area of DNA called the PROMOTER. The promoters are stretches of DNA that have a code that tells polymerases to “LAND HERE!”

6. http://www.geneticengineering.org/chemis/Chemis-NucleicAcid/Graphics/Transcription.gif

7. #2 RNA polymerase then OPENS THE DOUBLE HELIX (hence the super strength), exposing the code and the nitrogen bases with in. #3 RNA polymerase reads the DNA code and creates a single RNA strand. #4 RNA polymerase knows when to stop when he/she reaches the “ STOP ” code on the original DNA strand. #5 RNA polymerase then leaves up, up, and away.

9. 9 DNARNA A --- TA --- U C --- G

10. 10 DNA strand one: AATTCGCCG DNA strand two: TTAAGCGGC DNA strand one: AATTCGCCG RNA strand two: UUAAGCGGC