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Chapter 8: The Cell Cycle

Practice Test
  1.DNA synthesis occurs continuously on only one of the original DNA strands. What is this strand called?  
  a.   the leading strand  
  b.   the discontinuous strand  
  c.   the lagging strand  
  d.   the histone strand  
  2.Eukaryotic cell division is part of a complex series of stages in the life of a cell, called ____________ .  
  a.   the life cycle  
  b.   circulation  
  c.   homeostasis  
  d.   the cell cycle  
  3.What is the point at which the cell receives signals that tell it to commit to a full round of the cell cycle?  
  a.   division point  
  b.   G0  
  c.   restriction point  
  d.   premitosis  
  4.DNA synthesis requires DNA polymerase, an RNA synthesizine enzyme, and an enzyme that unwinds the double helix. What is the combination of these proteins and DNA called?  
  a.   replication origins  
  b.   a replisome  
  c.   chromatin  
  d.   a nucleosome  
  5.What is a DNA-protein complex that allows DNA molecules to fit into a cell's nucleus?  
  a.   nucleosome  
  b.   replisome  
  c.   cytokinesis  
  d.   leading strand  
  6.In an eukaryotic cell, what controls the stages of the cell cycle?  
  a.   kinases  
  b.   proteins called cyclins  
  c.   DNA polymerase  
  d.   proteins called histones  
  7.What are the two copies of each chromosome made during the S stage of the cell cycle?  
  a.   nucleosomes  
  b.   sister replisomes  
  c.   sister chromatids  
  d.   centrioles  
  8.Which of these is the stage in the cell cycle during which the cell prepares to divide?  
  a.   G2  
  b.   M  
  c.   S  
  d.   G1  
  9.What is the period in the cell cycle between cell divisions?  
  a.   telophase  
  b.   interphase  
  c.   metaphase  
  d.   anaphase  
  10.Which of these cells in the human body, when mature, do not normally divide?  
  a.   nerve cells  
  b.   liver cells  
  c.   stem cells  
  d.   skin cells  

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