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Chapter 8: The Cell Cycle

Practice Test
  1.Once mitosis is complete, what must occur before cell division is complete?  
  a.   nuclear division  
  b.   cytokinesis  
  c.   passing the restriction point  
  d.   DNA replication  
  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  
  3.What are the stages of the cell cycle in which the cell grows and synthesizes RNA, proteins, and other macromolecules?  
  a.   G1 and G2  
  b.   G1 and M  
  c.   S and GO  
  d.   G2 and S  
  4.DNA strands are parallel but run in opposite directions. What is this arrangement known as?  
  a.   opposite structure  
  b.   antiparallel structure  
  c.   parallel structure  
  d.   alternate structure  
  5.Which of these cells in the human body, when mature, do not normally divide?  
  a.   liver cells  
  b.   stem cells  
  c.   nerve cells  
  d.   skin cells  
  6.What is the first step in the replication of DNA?  
  a.   unwinding of the double helix  
  b.   synthesis of a new matching strand for each existing strand  
  c.   binding of enzymes to existing DNA  
  d.   DNA polymerase makes a new strand to pair with undamaged strand  
  7.In DNA, the nitrogen base adenine only pairs with the nitrogen base _______ .  
  a.   guanine  
  b.   uracil  
  c.   thymine  
  d.   cytosine  
  8.What is any change in the sequence of a cell's DNA?  
  a.   a mutation  
  b.   a replication  
  c.   a nuclear division  
  d.   a restriction  
  9.What is a DNA-protein complex that allows DNA molecules to fit into a cell's nucleus?  
  a.   leading strand  
  b.   cytokinesis  
  c.   nucleosome  
  d.   replisome  
  10.What is another term for mitosis?  
  a.   nuclear division  
  b.   interphase  
  c.   S stage  
  d.   cytokinesis  

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