16 - Biology:ConceptsandConnections,6e(Campbell) Chapter16...

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Biology: Concepts and Connections, 6e (Campbell)  Chapter 16    1
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The Origin  and  Evolution of  Microbial  Life:  Prokaryotes  and Protists Multiple - Choice Questions 1) 
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stromatolite is  A) 
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a distinctive  layered structure formed by heterotrophic bacteria.  B) 
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a distinctive  layered structure formed by photosynthetic prokaryotes.  C) 
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an early  protozoan.  D) 
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a fossil layer  containing plants.  E) 
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a living algal  mat formed by plasmodial slime molds.  Answer:  
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Topic: 
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Opening Essay  Skill: 
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Conceptual  Understanding
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2) 
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Which of  the following organisms first introduced oxygen into Earth's atmosphere?  A) 
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cyanobacteria  B) 
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methanogens  C) 
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early  protozoans  D) 
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plants  E) 
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green algae  Answer:  
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Topic: 
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Opening Essay  Skill: 
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Factual Recall 3) 
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Individual prokaryote cells are about ________ eukaryote cells; collectively, all prokaryote cells on Earth ________.  A) 
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the same size as  . . . weigh about one - tenth the total mass of eukaryote cells  B) 
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ten times bigger  than . . . weigh about ten times as much as the total mass of eukaryote cells  C) 
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one - tenth as big  as . . . weigh about one - tenth the total mass of eukaryote cells  D) 
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one - tenth as big  as . . . weigh about as much as the total mass of eukaryote cells  E) 
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one - tenth as big  as . . . weigh about ten times as much as the total mass of eukaryote cells  Answer:  
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Topic: 
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16.1  Skill: 
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Factual Recall 4) 
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This note was uploaded on 02/12/2011 for the course BIOL biology taught by Professor Ahmed during the Spring '11 term at Arizona Western College.

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16 - Biology:ConceptsandConnections,6e(Campbell) Chapter16...

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