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Name Date Period DNA Notes Review 1. What are the main parts DNA is made of? 2. Each monomer is made of three parts. List the three parts. 3. Name the four different bases. 4. The backbone or sides of DNA are made from which two molecules? 5. What molecules are found in the middle? 6. Label the diagram below. Write a “P” for the phosphates, a “D” for the sugar Deoxyribose, and “NB” for nitrogenous bases. Each shape below MUST be labeled what it is. 7. What scientist used X-rays to take pictures of DNA? 8. What scientists used the X-ray pictures to build a physical model of DNA? 9. What is the shape of the DNA model? 10. What types of bonds hold the two sides of DNA together? 11. Which pairs of bases would form hydrogen bonds together? 12. If one DNA chain had the nucleotides listed below, what nucleotides would be on the opposite chain? 13. What is it called when DNA makes copies of itself? 14. During DNA replication, the DNA molecules separate into two strands, what happens next? 15. What do the Histone enzymes do? 16. What is semicoservative replication? 17. What is the main enzyme that performs DNA replication 18. What else doe DNA polymerase do? Name Date Period 19. Draw a diagram that shows what is happening during semiconservative replication. Your diagram should have at least 3 steps. 20. what is dfferent between the leading strand and the lagging strand? 21. What does DNA Ligase do? 22. Fill in the flow chart below: Model made by DNA Shape of model Made of these monomers Made of 3 parts Pairs and proofreads nucleotides 3 Enzyme used during Replication function There are 4 kinds function DNA LIGASE Type of bond Bonds with Bonds with function Breaks hydrogen bonds Name if the statement below is true or false. If false, CHANGE the underlined word to make it correct. ______________23. Amino Acids are the monomers of DNA ______________24. The sides of the DNA double helix are made of the Nitrogenous bases ______________25. The enzyme that pairs up the nucleotides to their complementary pairs is the DNA Ligase ______________26. The process of DNA replication is how DNA makes copies of itself. ______________27. During base pairing , the base Adenine pairs with the base Guanine ______________28. During base pairing, the base Thymine pairs with the base Thymine ______________29. The model of how DNA replicates with one original pairing to new nucleotides is conservative replication. ______________30. Watson and Crick took X-ray photographs that showed DNA’s physical structure