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Chapter 8: The Cell Cycle

Practice Test
      
  1.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  
  Hint    
      
  2.What is a DNA-protein complex that allows DNA molecules to fit into a cell's nucleus?  
  a.   cytokinesis  
  b.   replisome  
  c.   nucleosome  
  d.   leading strand  
  Hint    
      
  3.During what stage of the cell cycle does DNA replicate?  
  a.   R  
  b.   M  
  c.   G0  
  d.   S  
  Hint    
      
  4.What is the first step in the replication of DNA?  
  a.   binding of enzymes to existing DNA  
  b.   synthesis of a new matching strand for each existing strand  
  c.   unwinding of the double helix  
  d.   DNA polymerase makes a new strand to pair with undamaged strand  
  Hint    
      
  5.In what stage of the cell cycle are most cells found in adult multicellular organisms?  
  a.   G1  
  b.   S  
  c.   G2  
  d.   G0  
  Hint    
      
  6.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 nucleosome  
  c.   a replisome  
  d.   chromatin  
  Hint    
      
  7.If checkpoint control proteins detect mistakes and damage during the cell cycle, the cell enters ________ so that repairs can be made.  
  a.   cytokinesis  
  b.   nuclear division  
  c.   cell-cycle arrest  
  d.   interphase  
  Hint    
      
  8.What is the point at which the cell receives signals that tell it to commit to a full round of the cell cycle?  
  a.   premitosis  
  b.   restriction point  
  c.   division point  
  d.   G0  
  Hint    
      
  9.What is another term for mitosis?  
  a.   cytokinesis  
  b.   S stage  
  c.   interphase  
  d.   nuclear division  
  Hint    
      
  10.DNA strands are parallel but run in opposite directions. What is this arrangement known as?  
  a.   antiparallel structure  
  b.   alternate structure  
  c.   parallel structure  
  d.   opposite structure  
  Hint    

 
   
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