1. Section 13.1 RNA and Transcription

2. I. Structure of RNA 1. RNA: (Ribonucleic Acid) will carry genetic info from DNA in nucleus to the cytosol a)Helps __________________________ 2. 3 components:

3. I. Structure of RNA 3. Nitrogen base Thymine is replaced with a new base- Uracil ( U ) a)Uracil : b)Guanine : Cytosine

4. RNA

5. A) Types of RNA Types of RNATypes of RNA 1. 3 types of RNA a)Messenger RNA (mRNA):Messenger RNA b)Transfer RNA (tRNA): c)Ribosomal RNA (rRNA):

6. II. Transcription 1. Transcription: process where genetic info is copied from DNA into RNA a)“__________________”

7. A. Steps of Transcription Steps of TranscriptionSteps of Transcription 1. RNA polymerase binds to a ________ to break 2 strands of DNA apart a) RNA polymerase: enzyme that b) Promoter: location where

8. A. Steps of Transcription Steps of TranscriptionSteps of Transcription 2. RNA polymerase will bind to 1 st nucleotide of DNA 3. Complementary RNA nitrogen bases will attach to one DNA strand 4. Transcription will stop when:

9. A. Steps of Transcription 5. RNA polymerase will separate from DNA and RNA

10. B. Products of Transcription 1. End products a)mRNA, ______, rRNA 2. Only mRNA will move the message from the nucleus to the ___________