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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.   cell-cycle arrest  
  b.   cytokinesis  
  c.   interphase  
  d.   nuclear division  
  2.What is the enzyme that catalyzes the formation of the new DNA strands?  
  a.   histone  
  b.   DNA polymerase  
  c.   cyclin  
  d.   kinase  
  3.DNA synthesis occurs continuously on only one of the original DNA strands. What is this strand called?  
  a.   the leading strand  
  b.   the histone strand  
  c.   the discontinuous strand  
  d.   the lagging strand  
  4.In DNA, the nitrogen base adenine only pairs with the nitrogen base _______ .  
  a.   thymine  
  b.   cytosine  
  c.   guanine  
  d.   uracil  
  5.What are the stages of the cell cycle in which the cell grows and synthesizes RNA, proteins, and other macromolecules?  
  a.   G2 and S  
  b.   G1 and G2  
  c.   S and GO  
  d.   G1 and M  
  6.What is the period in the cell cycle between cell divisions?  
  a.   telophase  
  b.   interphase  
  c.   anaphase  
  d.   metaphase  
  7.Which of these cells in the human body, when mature, do not normally divide?  
  a.   stem cells  
  b.   liver cells  
  c.   skin cells  
  d.   nerve cells  
  8.DNA strands are parallel but run in opposite directions. What is this arrangement known as?  
  a.   opposite structure  
  b.   alternate structure  
  c.   parallel structure  
  d.   antiparallel structure  
  9.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.   chromatin  
  b.   a nucleosome  
  c.   a replisome  
  d.   replication origins  
  10.Once mitosis is complete, what must occur before cell division is complete?  
  a.   passing the restriction point  
  b.   cytokinesis  
  c.   DNA replication  
  d.   nuclear division  

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