LIFE SCIENCE QUIZ

Aug 23rd, 2016
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QUESTION 1 Oxygen built up in the atmosphere approximately 2 billion years ago and A. destroyed ozone forming more oxygen. B. occurred due to carbon dioxide being split by lightning strikes. C. could not have occurred without the oxygen coming from outer space. D. occurred because aerobic organisms required the oxygen. E. helped to form the ozone layer that is so important to life today. QUESTION 2 Which form of bacterial cells is rod shaped? A. vibrios B. bacilli C. rhodius D. cocci E. spirilla QUESTION 3 Most bacteria are A. chemoautotrophs. B. symbionts. C. heterotrophs. D. photoautotrophs. E. microbial predators. QUESTION 4 Rickettsias belong to which major group of bacteria? A. spirochetes B. Archaea C. cyanobacteria D. viruses E. proteobacteria QUESTION 5 What term is used to indicate a characteristic that is shared and inherited from a common ancestor? A. homologous trait B. cladistic trait C. outgroups D. derived trait E. analogous trait QUEST

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LIFE SCIENCE QUIZQ U E S T IO N 1Oxygen built up in the atmosphere approximately 2 billion years ago andA.B.C.D.E.destroyed ozone forming more oxygen.occurred due to carbon dioxide being split by lightning strikes.could not have occurred without the oxygen coming from outer space.occurred because aerobic organisms required the oxygen.helped to form the ozone layer that is so important to life today.Q U E S T IO N 2Which form of bacterial cells is rod shaped?A.B.C.D.E.vibriosbacillirhodiuscoccispirillaQ U E S T IO N 3Most bacteria areA.B.C.D.E.chemoautotrophs.symbionts.heterotrophs.photoautotrophs.microbial predators.Q U E S T IO N 4Rickettsias belong to which major group of bacteria?A.B.C.D.E.spirochetesArchaeacyanobacteriavirusesproteobacteriaQ U E S T IO N 5What term is used to indicate a characteristic that is shared and inherited from a commonancestor?A.B.C.D.E.homologous traitcladistic traitoutgroupsderived traitanalogous traitQ U E S T IO N 6In bacteria, the cell wall is composed mainly ofA.B.C.D.E.peptidoglycans.various polysaccharides.glycoproteins.lipids.proteins.Q U E S T IO N 7Eukaryotic cells are thought to haveA.B.C.D.E.evolved before prokaryotic cells.first appeared with tough cell walls.first appeared as parts of multicellular organisms.developed when mitochondria grew much larger in size that they had been previously.appeared about 2.1 billion years ago.Q U E

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