Regents Biology Nucleic acids: Information molecules
Regents Biology Nucleic Acids Examples DNA DeoxyriboNucleic Acid RNA RiboNucleic Acid RNA
Regents Biology DNA Nucleic Acids Function: genetic material stores information genes blueprint for building proteins DNA RNA proteins transfers information blueprint for new cells blueprint for next generation proteins
Regents Biology A A A A T C G C G T G C T Genes (DNA) are needed to run bodies every day … to make you and me … to make new cells … to make babies!
Regents Biology Nucleic acids Building block = nucleotides 5 different nucleotides different nitrogen bases A, T, C, G, U nucleotide – nucleotide – nucleotide – nucleotide phosphate sugar N base Nitrogen bases I’m the A,T,C,G or U part!
Regents Biology Nucleotide chains Nucleic acids nucleotides chained into a polymer DNA double-sided double helix A, C, G, T RNA single-sided A, C, G, U phosphate sugar N base phosphate sugar N base phosphate sugar N base phosphate sugar N base strong bonds RNA
Regents Biology DNA Double strand twists into a double helix weak bonds between nitrogen bases join the 2 strands A pairs with T A :: T C pairs with G C :: G the two strands can separate when our cells need to make copies of it weak bonds
Regents Biology Copying DNA Replication copy DNA 2 strands of DNA helix are complementary they are matching have one, can build other have one, can rebuild the whole
Regents Biology Copying DNA pairing of the bases allows each strand to serve as a pattern for a new strand Newly copied strands of DNA DNA replication
Regents Biology Watson and Crick … and others… 1953 | 1962
Regents Biology HELIXHELIX Let’s build some DNA!