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Chapter 8: The Cell Cycle

Practice Test
  1.If checkpoint control proteins detect mistakes and damage during the cell cycle, the cell enters ________ so that repairs can be made.  
  a.   nuclear division  
  b.   cytokinesis  
  c.   cell-cycle arrest  
  d.   interphase  
  2.Which of these is the stage in the cell cycle during which the cell prepares to divide?  
  a.   S  
  b.   M  
  c.   G2  
  d.   G1  
  3.In what stage of the cell cycle are most cells found in adult multicellular organisms?  
  a.   G2  
  b.   G0  
  c.   G1  
  d.   S  
  4.What is the period in the cell cycle between cell divisions?  
  a.   metaphase  
  b.   telophase  
  c.   anaphase  
  d.   interphase  
  5.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  
  6.Eukaryotic cell division is part of a complex series of stages in the life of a cell, called ____________ .  
  a.   homeostasis  
  b.   the life cycle  
  c.   the cell cycle  
  d.   circulation  
  7.In an eukaryotic cell, what controls the stages of the cell cycle?  
  a.   proteins called histones  
  b.   proteins called cyclins  
  c.   DNA polymerase  
  d.   kinases  
  8.Once mitosis is complete, what must occur before cell division is complete?  
  a.   cytokinesis  
  b.   DNA replication  
  c.   passing the restriction point  
  d.   nuclear division  
  9.What are the two copies of each chromosome made during the S stage of the cell cycle?  
  a.   sister replisomes  
  b.   nucleosomes  
  c.   sister chromatids  
  d.   centrioles  
  10.What is a DNA-protein complex that allows DNA molecules to fit into a cell's nucleus?  
  a.   cytokinesis  
  b.   leading strand  
  c.   replisome  
  d.   nucleosome  

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