Open Quick Links Quick Links Logout Global Menu Nikki FultonExpand Global Nav Blackboard Learn Top Frame Tabs Home Tab 1 of 2 Courses Tab 2 of 2 (active tab) Current Location Turn help text off and on GS102 Introduction to Life Science (01-MAR-17 –

Open Quick LinksQuick LinksLogoutGlobal Menu Nikki FultonTop Frame TabsHome Tab 1 of 2Courses Tab 2 of 2 (active tab)Current LocationGS102 Introduction to Life Science (01-MAR-17 – 25-APR-17 [9360])Week 6 “Animal Reproduction, Development, and Behavior”Take Test: W6 QuizTake Test: W6 QuizContentAssistive Technology Tips [opens in new window] Test InformationInstructionsDescription Instructions Multiple AttemptsNot allowed. This test can only be taken once.Force CompletionThis test can be saved and resumed later.Question 1Some bacteria can form resting structures called ___________ that can withstand extremes in temperature, moisture, and radiation.A.symbiontsB.viroidsC.prionsD.endosporesE.capsids5 points   Question 2All but one of the following are false regarding protists. Identify the true statement.A.Most protists are single-celled organisms; some are multicellular.B.Protists have cell walls composed mainly of peptidoglycans.C.All protists are single-celled organisms.D.Protists are prokaryotic.E.Protists do not have the ability to move on their own.5 points   Question 3What is the main difference between protists and bacteria?A.Protists cannot cause infections, bacteria canB.Protists are unicellular, bacteria are multicellular.C.Protists have a nucleus, bacteria do notD.Bacteria are always gram-negative, protists are gram-positiveE.Bacteria have DNA, protists do not.5 points   Question 4The endosymbiont hypothesis suggests that the mitochondria of eukaryotic cells are descended from capturedA.aerobic bacteria.B.archaebacteria.C.eukaryotic algae.D.cyanobacteria.E.chemoautotrophic bacteria.5 points   Question 5In bacteria, the cell wall is composed mainly ofA.proteins.B.lipids.C.peptidoglycans.D.various polysaccharides.E.glycoproteins.5 points   Question 6Oxygen built up in the atmosphere approximately 2 billion years ago andA.helped to form the ozone layer that is so important to life today.B.destroyed ozone forming more oxygen.C.could not have occurred without the oxygen coming from outer space.D.occurred due to carbon dioxide being split by lightning strikes.E.occurred because aerobic organisms required the oxygen.5 points   Question 7What term is used to indicate a characteristic that is shared and inherited from a common ancestor?A.homologous traitB.outgroupsC.cladistic traitD.analogous traitE.derived trait5 points   Question 8Of the following, which kingdom contains the most diversity in terms of DNA sequences?A.ProtistaB.PlantaeC.All of these are approximately equivalently diverse.D.FungiE.Animalia5 points   Question 9Paleontologists have found fossils dating back 3.6 billion years. These closely resembleA.fungi.B.blue-green algae present today.C.small invertebrate animals.D.nothing alive today.E.today’s simplest plants.5 points   Question 10During which geological era did Pangea break apart?A.ArcheanB.ProterozoicC.CenozoicD.MesozoicE.Paleozoic5 points   Question 11Prions are composed ofA.DNA.B.protein.C.RNA.D.DNA and protein.E.DNA, RNA, and protein.5 points   Question 12Endospores formA.during binary fission.B.when the environmental conditions are favorable.C.in response to adverse conditions.D.to produce two offspring from every one parental cell.E.as a means of genetic recombination.5 points   Question 13Kelps are a form of what group of protists?A.ciliatesB.dinoflagellatesC.slime moldsD.brown algaeE.water molds5 points   Question 14Rickettsias belong to which major group of bacteria?A.cyanobacteriaB.proteobacteriaC.virusesD.ArchaeaE.spirochetes5 points   Question 15Most bacteria areA.photoautotrophs.B.heterotrophs.C.chemoautotrophs.D.symbionts.E.microbial predators.5 points   Question 16Which form of bacterial cells is rod shaped?A.spirillaB.bacilliC.vibriosD.cocciE.rhodius5 points   Question 17Atmospheric chemists think that Earth’s first atmosphereA.contained no oxygen atoms.B.was very similar to today’s atmosphere.C.consisted of carbon in the form of carbon monoxide.D.consisted of carbon in the form of carbon dioxide.E.contained nitrogen in the form of ammonia and nitrogen gas.5 points   Question 18Eukaryotic cells are thought to haveA.evolved before prokaryotic cells.B.developed when mitochondria grew much larger in size that they had been previously.C.first appeared with tough cell walls.D.appeared about 2.1 billion years ago.E.first appeared as parts of multicellular organisms.5 points   Question 19When taxonomists classify organisms using a phylogenetic approach, they are most concerned withA.cladists.B.ingroups.C.ancestral traits.D.derived traits.E.outgroups.5 points   Question 20The Cambrian Explosion provided a wealth of fossil remains for scientists to uncover. Many of the animals from this time period had tough skins or shells. This wouldA.protect the animal from osmotic pressure.B.be a disadvantage for these organisms and lead to their death and fossil formation.C.allow the animals to move into different environments easily.D.protect the animal from predators.E.make these animals more desirable to predators.5 points    Save and SubmitClick Save and Submit to save and submit. Click Save All Answers to save all answers.