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Chapter 8: The Cell Cycle

Practice Test
      
  1.In what stage of the cell cycle are most cells found in adult multicellular organisms?  
  a.   G1  
  b.   G0  
  c.   G2  
  d.   S  
  Hint    
      
  2.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.   a nucleosome  
  b.   a replisome  
  c.   chromatin  
  d.   replication origins  
  Hint    
      
  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.   restriction point  
  b.   premitosis  
  c.   division point  
  d.   G0  
  Hint    
      
  4.In DNA, the nitrogen base adenine only pairs with the nitrogen base _______ .  
  a.   cytosine  
  b.   guanine  
  c.   thymine  
  d.   uracil  
  Hint    
      
  5.Once mitosis and cytokinesis are complete, what part of the cell cycle do the daughter cells enter?  
  a.   prophase  
  b.   G0  
  c.   telophase  
  d.   G1  
  Hint    
      
  6.What is a DNA-protein complex that allows DNA molecules to fit into a cell's nucleus?  
  a.   leading strand  
  b.   cytokinesis  
  c.   replisome  
  d.   nucleosome  
  Hint    
      
  7.Which of these is the stage in the cell cycle during which the cell prepares to divide?  
  a.   M  
  b.   G2  
  c.   G1  
  d.   S  
  Hint    
      
  8.Once mitosis is complete, what must occur before cell division is complete?  
  a.   DNA replication  
  b.   nuclear division  
  c.   cytokinesis  
  d.   passing the restriction point  
  Hint    
      
  9.What are the two copies of each chromosome made during the S stage of the cell cycle?  
  a.   centrioles  
  b.   sister chromatids  
  c.   sister replisomes  
  d.   nucleosomes  
  Hint    
      
  10.What is the enzyme that catalyzes the formation of the new DNA strands?  
  a.   histone  
  b.   kinase  
  c.   DNA polymerase  
  d.   cyclin  
  Hint    

 
   
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