1) The twisted ladder shape of DNA: a) enzyme b) double helix c) polymerase 2) A, G, C and ___ are the letters that represent the bases in DNA. a) B b) L c) T 3) How do the nitrogen bases pair up in DNA? a) A and T , C and G b) A and C, T and G c) A and C, C and T 4) The first step of DNA replication: a) The nitrogen bases pair up b) DNA polymerase binds new nitrogen bases c) DNA unzips 5) The name of the enzyme that "unzips" or separates the DNA strand: a) polymerase b) primase c) helicase 6) Which enzyme is responsible for adding new nitrogen bases? a) polymerase b) primase c) helicase 7) In the end, you have two strands of DNA that... a) contain all new nitrogen bases. b) consist of half "old" and half "new" nitrogen bases. 8) Which enzyme is responsible for starting the replication of DNA? a) Helicase b) Polymerase c) Primase d) Ligase 9) If a cell was in S phase of interphase but did not have any primase present, what might be a result? a) DNA replication would continue as usual b) DNA replication would take longer due to polymerase needing to find the starting position on its own c) DNA replication would be impossible due to the role of primase as a "primer" to start DNA replication 10) Why is it import for DNA to replicate during interphase? a) So that the cell can grow larger b) So that the cell can undergo mitosis c) So that the body cells can produce gametes

DNA Replication

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