Nucleic Acids Examples DNA RNA ATP DeoxyriboNucleic Acid

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Presentation transcript:

Nucleic Acids Examples DNA RNA ATP DeoxyriboNucleic Acid Adenosine TriPhosphate DNA Double Helix

Nucleic Acids Function: genetic material stores information chromosomes Nucleic Acids Function: genetic material stores information genes blueprint for building proteins DNA  RNA  proteins (protein Synthesis) transfers information blueprint for new cells blueprint for next generation Reproduction

Smallest To Largest nucleotide nucleic acid genes (bands) nucleus in the cell chromosome

Nucleic acids 5 different nucleotides Building block = nucleotides (monomer) one strand nucleotide – nucleotide – nucleotide – nucleotide 5 different nucleotides different nitrogen bases A, T, C, G, U Nitrogen bases I’m the A,T,C,G or U part! Phosphate PO4 Sugar -ose N base DNA – deoxyribose RNA and ATP - ribose

sugar-phosphate backbone N base 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 strong bonds phosphate sugar N base sugar-phosphate backbone phosphate sugar N base

complementary bases “fit” together DNA Double strand twists into a double helix weak bonds – hydrogen bonds form 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 – need enzymes and ATP complementary bases “fit” together weak bonds shown as dotted lines It’s a helix or B sheet within a single region. Can have both in one protein but a specific region is one or another

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 when cells divide, they must duplicate DNA exactly for the new “daughter” cells Why is this a good system?

Watson and Crick … and others… 1953 | 1962 Watson and Crick … and others…