DNA and RNA

DNA Deoxyribonucleic Acid Genetic code of life Located inside the nucleus NEVER leaves the nucleus Double Stranded Shape of DNA is a double helix Made of nucleotides

Structure of DNA Contains: –Phosphate –Sugar –Nitrogen Base

Structure of DNA Adenine Thymine Guanine Cytosine Deoxyribose

DNA Base Pairing Rules Adenine pairs with Thymine A T Guanine pairs with Cytosine G C

DNA Base “Round Up” Find a match for the DNA base you were given Remember your DNA base pairing rules

“Round Up Yourself” What does each DNA base pair with? A __________________________ G __________________________ T ___________________________ C ___________________________ G ___________________________ A ____________________________

Each base pair is connected by a hydrogen bond Backbone has covalent bonds

RNA Ribonucleic Acid Makes of copy of the code of life (DNA) Located outside the nucleus Single stranded 3 Types of RNA: Messenger, Transfer, Ribosomal Made of nucleotides

Structure of RNA Adenine URACIL Guanine Cytosine RIBOSE DNA does not have Uracil

RNA Base Pairing Rules Adenine pairs with Uracil A U Guanine pairs with Cytosine G C

RNA Base “Round Up” Find a match for the RNA base you were given Remember your RNA base pairing rules

“Round Up Yourself” What does each DNA base pair with? U __________________________ G __________________________ A ___________________________ C ___________________________ U ___________________________ A ____________________________

3 Types of RNA Messenger RNA (mRNA) – carries genetic information from nucleus to cytoplasm Transfer RNA (tRNA) – carries amino acids from cytoplasm to ribosomes Ribosomal RNA (rRNA) – consists of RNA nucleotides in globular form

DNA vs. RNA DNARNA SugarDeoxyriboseRibose Nitrogen Base ThymineUracil StructureDouble Stranded Single Stranded