1. LS: I will be able to identify and describe the different types of RNA.

2. 3 Types of RNA What is the main purpose of RNA? Messenger RNA (mRNA) a.Are complementary to a strand of DNA (made during transcription. b.Consists of RNA nucleotides c.Function in carrying genetic information from the nucleus to the cytoplasm where protein synthesis takes place

3. What are the base pairing rules for RNA? Transfer RNA (tRNA) a.Single chain of nucleotides folded into the shape of a “cloverleaf” b.Function in transferring each of amino acid to the ribosome during the construction of a protein c.The anticodon (a triplet of nucleotides) will determine which amino acid the tRNA will carry to the growing protein chain

4. Where would you find tRNA and rRNA in the cell? Ribosomal RNA (rRNA) a.A component of ribosomes b.Site where proteins are assembled

5. 1. _________ is made during the process of transcription. 2. _________ carries a copy of the gene to the cytoplasm where the protein can be made. 3. The ________ identifies which amino acid is carried to the growing protein chain. 4. ________ is the site of protein synthesis. LET’S RECAP….

6. LS: I will be able to list and describe the steps of transcription.

7. Transcription=copying a single gene Problem: The DNA is too Big of a molecule to fit through the pores of the nuclear envelope Solution: makes of copy of the gene that is able to leave the nucleus, and goes move to the site of protein synthesis

8. DNA to mRNA 1. RNA polymerase is added at the promoter, unzipping the DNA 1. RNA polymerase is added at the promoter, unzipping the DNA 2. One template is used, RNA nucleotides are added based on complementary base pairing rules 2. One template is used, RNA nucleotides are added based on complementary base pairing rules 3. RNA nucleotides are added until the termination signal is reached 3. RNA nucleotides are added until the termination signal is reached 4. The RNA molecule is released and the DNA is re-assembled. 5. The RNA molecule is trimmed to it’s final size by removing the introns. (leaving exons) 5. The RNA molecule is trimmed to it’s final size by removing the introns. (leaving exons) Process is called Transcription!

9. LET’S PRACTICE… DNA Template ATGACGATGACG U U C C G A

10. 1. ________ is the process where is a gene is copied from DNA to mRNA. 2. A _______ identifies the beginning of a gene. 3. _____ are removed from the mRNA since they do not code for a gene. 4. _____ form the final mRNA, and will code for the protein that is to be synthesized. 5. RNA _______ is the enzyme responsible for adding RNA nucleotides during the process of transcription. TIME TO RECAP…