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Biology Chapter 13 Review

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  • Which enzyme unzips the DNA strand?
    Helicase
  • Which enzyme proof-reads the DNA strand and removes the RNA primers?
    nuclease
  • Which of the following scientists helped contribute important information relating to DNA?
    All of these
    Franklin
    Wilkins
    Watson & Crick
  • Which of the following best describes the leading strand in DNA replication?
    the leading strand is replicated continuously
    none of these
    the leading strand is replicated discontinuously
    the leading strand is replicated in chunks called Okazaki fr
  • Which enzyme add RNA primers to the DNA strand
    Primase
  • Which enzyme seals up the DNA strands?
    Ligase
  • What does the term “semi-conservatively” mean? How does it related to DNA replication?
    each strand of the original double helix serves as a template for the new DNA strand being replicated during DNA replication.
  • Which of the following is NOT one of the parts of a nucleotide?
    none of these
    phosphate group
    nitrogenous base
    sugar
  • Describe Chargaff’s Rule and how it relates to DNA.
    Chargaff’s Rule states that because of complementary base pairing, the number of complementary base pairs will be equal
  • DNA replication occurs ___________________________.
    in the s phase of interphase
  • Which of the following is NOT an example of a pyrimidine?
    Adenine
    Uracil
    Thymine
    Cytosine
  • What is the correct order of the steps of DNA Replication?
    Initiation, elongation, termination
  • Which enzyme adds DNA base pairs to the new DNA strand?
    DNA Polymerase
  • In DNA, Guanine always pairs with ___________________.
    Cytosine
  • _________________ is the sugar that’s found in _____________.
    Deoxyribose, RNA
    Deoxyribose, DNA
    Ribose, DNA
  • Describe what is meant by complementary base pairing.
    complementary base pairing; A pairs with T & vice versa, and G pairs with C and vice versa
  • Using complete sentences, describe the overall process of DNA replication. Be sure to include information about what it is, when it occurs, the main steps, the enzymes involved, etc.
    DNA is copied in S phase to ensure Cells can have correct DNA after Cell Division. Initiat. (Helicase), Elong. (Primase & DNA Polym.),Terminat. (Nuclease ligase
  • In DNA, Adenine always pairs with ___________________.
    Thymine
    Uracil
    Guanie
    Cytosine
  • Draw the basic structure of a single nucleotide (i.e. you need to include the 3 parts of a nucleotide).
    Drawing Needs to have a sugar, phosphate group, nitrogenous base
  • DNA polymerase can only lay down base pairs in a ______________________ direction.
    5' - 3' direction