1. RNA Structure and Function

2. Another Nucleic Acid?? Meet RNA  Monomer: Polymer:  What are some differences between DNA and RNA?

4. Differences between DNA and RNA  DNA  Sugar= Deoxyribose  Double stranded  Contains the base thymine  Found only in the nucleus  RNA  Sugar= Ribose  Single Stranded  Contains the base uracil  Found in the nucleus and the cytoplasm

5. DNA Function  DNA holds your genetic information  Each gene codes for the production of a specific protein  The genetic code is in the sequence of nucleotides

6. RNA Function  DNA can never leave the nucleus  RNA can make a copy of the DNA gene and carry it out to the ribosome  The process of copying DNA into RNA is called transcription

7. TRANSCRIPTION

8. Transcription  Transcription takes place in the nucleus  The goal of transcription is to make an RNA copy of a gene

9. Transcription  Step One:  Step One: The DNA molecule “unzips”  Step Two:  Step Two: Following the rules of base pairing, a single stranded RNA molecule is made Remember in RNA U replaces T so… Base Pairing A  U T  A C  G G  C

10. Transcription

11.  Transcribe the following DNA sequence into RNA: DNA: T A C C G G T A A RNA: A U G G C C A U U  The type of RNA made during transcription is called messenger RNA (mRNA)  Step Three:  Step Three: mRNA leaves the nucleus and carries a copy of the gene to the ribosome

12. What happens next…