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Chapter 8: The Cell Cycle

Practice Test
  1.In DNA, the nitrogen base adenine only pairs with the nitrogen base _______ .  
  a.   thymine  
  b.   guanine  
  c.   cytosine  
  d.   uracil  
  2.What is any change in the sequence of a cell's DNA?  
  a.   a nuclear division  
  b.   a restriction  
  c.   a mutation  
  d.   a replication  
  3.Once mitosis is complete, what must occur before cell division is complete?  
  a.   DNA replication  
  b.   passing the restriction point  
  c.   cytokinesis  
  d.   nuclear division  
  4.What is the period in the cell cycle between cell divisions?  
  a.   interphase  
  b.   telophase  
  c.   metaphase  
  d.   anaphase  
  5.What is the narrow point near the center of the chromosome by which sister chromatids are attached?  
  a.   metaphase plate  
  b.   kinetochore  
  c.   centromere  
  d.   spindle  
  6.DNA synthesis occurs continuously on only one of the original DNA strands. What is this strand called?  
  a.   the leading strand  
  b.   the histone strand  
  c.   the discontinuous strand  
  d.   the lagging strand  
  7.What is the point at which the cell receives signals that tell it to commit to a full round of the cell cycle?  
  a.   G0  
  b.   premitosis  
  c.   restriction point  
  d.   division point  
  8.What is a DNA-protein complex that allows DNA molecules to fit into a cell's nucleus?  
  a.   nucleosome  
  b.   cytokinesis  
  c.   replisome  
  d.   leading strand  
  9.Once mitosis and cytokinesis are complete, what part of the cell cycle do the daughter cells enter?  
  a.   telophase  
  b.   G0  
  c.   prophase  
  d.   G1  
  10.What is the first step in the replication of DNA?  
  a.   synthesis of a new matching strand for each existing strand  
  b.   binding of enzymes to existing DNA  
  c.   DNA polymerase makes a new strand to pair with undamaged strand  
  d.   unwinding of the double helix  

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