1. ______________________
Nucleic acids:
______________________

2. Nucleic Acids Examples ____________ DeoxyriboNucleic Acid

3. Nucleic Acids Function: genetic material _________________________
genes
blueprint for building proteins
DNA  RNA  proteins
blueprint for new cells
blueprint for next generation
DNA
proteins

4. Genes (DNA) are needed to run bodies every day…C G
Genes (DNA) are needed to run bodies every day…
to make you and me… to make new cells…
to make babies!

5. Nucleic acids _______________________ Building block =
nucleotide – nucleotide – nucleotide – nucleotide
_______________________
different nitrogen bases
____________________
Nitrogen bases I’m the A,T,C,G or U part!
phosphate
sugar
N base

6. Nucleotide chains Nucleic acids nucleotides chained into a polymer
phosphate
sugar
N base
Nucleotide chains
Nucleic acids
nucleotides chained into a polymer
_________________
________________
phosphate
sugar
N base
phosphate
sugar
N base
phosphate
sugar
N base
RNA

7. DNA Double strand twists into a double helix
_______________ between nitrogen bases join the 2 strands
___________________
A :: T
C :: G
the two strands can easily separate when our cells need to make copies of it
_____________
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

8. Copying DNA _____________________ copy DNA
2 strands of DNA helix are _______________________
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?

9. Newly copied strands of DNA
DNA replication
Copying DNA
pairing of the bases allows each strand to serve as a pattern for a new strand
The greatest understatement in biology!
Newly copied strands of DNA

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

11. HELIXHELIX
Let’s build some
DNA!