1) The twisted ladder shape of DNA is called: a) enzyme b) double helix c) polymerase d) pasta twirl 2) Adenine, Guanine, Cytosine and ___ are the names of the DNA bases a) Thyroxine b) Lysosine c) Thymine d) Uracil 3) During DNA Replication, which strand is replicated discontinously? a) Lagging Strand b) Leading Strand 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) DNA polymerase b) Primase c) Helicase d) Ligase 6) Which enzyme is responsible for adding new bases? a) DNA polymerase b) Primase c) Helicase d) Ligase 7) In which direction do you 'read' a strand of DNA code? a) 3' to 5' b) 5' to 3' c) Both strands are read together d) DNA code cannot be read until it is translated 8) 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. 9) Why is it import for DNA to replicate? 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 10) 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 11) Which enzyme is responsible for adding fragments together? a) DNA polymerase b) Primase c) Helicase d) Ligase 12) What is a Primer? a) A make up product used after foundation b) Short strand of complementary RNA bases c) An enzyme molecule 13) Why is DNA said to run anti-parallel? a) There are 2 strands with different code b) Each strand is created in the opposite direction c) DNA is not anti-parallel

DNA Structure & Replication

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