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  1. What does DNA stand for?
    Deoxribose Nucleic acid
  2. Whats is DNAs primary function
    acts as guidlines
  3. what are the repeating subunits called that make up DNA
  4. Name three parts of a DNA nucleotide
    deoxribose sugar, phosphate, nitrogen base
  5. name the four nitrogen bases of a DNA nucleotide
    Thymine, Adiene,Guanime, cytosine
  6. What is the differnce between  a purine & prymidine
    purine has a double ring, prymidine has a single ring
  7. how does DNA look?
    • -double helix
    • -two strands
  8. what makes up the "steps" of a DNA molecule
    nitrogen bases
  9. how does the nucleotide sequence in one chain of DNA compare with the other chain of DNA
  10. what is the function of DNA polymerase
    joins nucleotides and proof reads
  11. what did roseland franklin do?
    used an X-ray to find that DNA is double helixed
  12. what did erwin hargaff figure out about DNA
    chargaff rule ( A-T, G-C)
  13. What did Watson and Crick figure out
    the stole roseland franklins idea about the double helix and created the first model of DNA
  14. what are the fragments called in the lagging strand of DNA
  15. how are all the fragments glued togather
  16. whats the difference between RNA and DNA
    •  RNA-single stranded,ribose sugar,Uracil
    • DNA- doulbe stranded, deoxribose sguar, thymine
  17. what are the 2 steps of protien synthesis
    Transcription and Translation
  18. Where is trancription and translation located?
    • trancription: inside nucleus
    • translation: @ a ribosome
  19. Whats the function of polymerase RNA
    Opens up and lays down mRNA
  20. What are introns or extrons?
    • introns: cut out
    • extrons: fused in
  21. What is a codon?
    three base pairs that codes for a speific Amino Acid
  22. What bond joins Amino Acid?
  23. Whats a mutation and how does it happen?
    • When somthing goes wrong with the codons.
    • Two options:
    • Point mutation =switch one letter
    • Fram mutation = delete or insert of a codon
  24. Whats a genome ?
    the map of all you genes from all your chromosomes.
  25. What restriction enzymes? why is it important to use the same restriction enzymes when trying to create  recombination, DNA and during DNA fingerprinting?
    they are enzymes that cut DNA , found in a viris or natrually in your body. You must use the same one so your ends fit togather. I fyou used differnet ones then you wouldny be able to identify the crimanal cause everyones one would be different
  26. List the three types of RNA and define them
    • mRNA - transribes
    • rRNA-part of ribsome
    • tRNA-carrys anticodon to the codon on mRNA
  27. What is transcription?
    copying or transcribing the message from the DNA
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