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DNA Structure and Function 1. DNA is often called the _________________________________ of __________________. 2. DNA contains the ___________________________________ for _____________________________ __________________________________ within the cell. 3. Discovery of the DNA __________________________ _____________________ A. Frederick Griffith: Bacteria Transformation B. _____________________________ ________________________: x-­‐ray photo of DNA. C. ___________________________ & ___________________________: described the __________ molecule from Franklin’s X-­‐ray. 4. Our _____________________ are on our ____________________________________________ which are made up of a chemical called ___________________________. 5. DNA consists of two molecules arranged into a ________________________ like structure called a ________________________________ __________________. 6. a molecule of DNA is made up of millions of tiny subunits called ____________________________________________ that consist of: a. ______________________________________ group b. _______________________________ ________________________________ (5 carbon sugar) c. __________________________________________________ _______________________ 7. the backbone is molecule is alternating _____________________________________________ and ______________________________________________________ sugar. The teeth or rungs are _______________________________________________________ bases. 8. Each base pairs with one and only one specific base. __________________________ pairs with _________________________________ and __________________________ pairs with _________________________________. 9. __________________________________________ are ________________________ ring bases. Pyrimidines: _________________________________ and ______________________________ 10. ___________________________________ are _____________________________ring bases. Purines: ______________________________________ and _______________________________ 11. The bases are attracted to eachother by __________________________________ __________. 12. Chargraff’s rule: 13. Bases are arranged in _____________________ called _____________________________ A G G -­‐ C T C -­‐ A A G -­‐ T C C -­‐ T A G T C C -­‐ G A G -­‐ T T C -­‐ A G G -­‐ A T C 14. A _________________ is a section of DNA that codes for a ______________________. 15. Advantages of the double helix structure: A. ____________________________ B. Each strand serves as a ______________________________ i. for a new strand of ________________ (____________________________) ii. for an __________ molecule (__________________________________) 16. DNA and RNA are ____________________________________ ________________________ Comprised of: a. _a 5-­‐_______________________________ ________________________ a. _______________________________________________ or b. ribose b. Nucleotides c. DNA has ______________ strands bonded together. d. RNA has _____________ strand only. e. ________ ________ ________ ________ ________ atoms. Nucleotide structure:
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