OPENSTAX BIOLOGY 1-20 REVIEW
(2026/2027) UPDATE|EXAM
QUESTIONS WITH MULTIPLE
CHOICES |VERIFIED & REVISED
ANSWERS (NEW)!!!
ThemfirstmformsmofmlifemonmEarthmwerem________.
a.mplants
b.mmicroorganisms
c.mbirds
d.mdinosaursm-mCORRECTmANSWERmb.mmicroorganism
Amsuggestedmandmtestablemexplanationmformanmeventmismcalledmam________.
hypothesis
variable
theory
controlm-mCORRECTmANSWERmhypothesis
Whichmofmthemfollowingmsciencesmismnotmconsideredmamnaturalmscience?
biology
astronomy
physics
computermsciencem-mCORRECTmANSWERmcomputermscience
,Themtypemofmlogicalmthinkingmthatmusesmrelatedmobservationsmtomarrivematmamgeneralmconclusionmi
smcalledm________.
deductivemreasoning
themscientificmmethod
hypothesis-basedmscience
inductivemreasoningm-mCORRECTmANSWERminductivemreasoning
Themprocessmofm________mhelpsmtomensuremthatmamscientist'smresearchmismoriginal,msignificant,mlog
ical,mandmthorough.
publication
publicmspeaking
peermreview
themscientificmmethodm-mCORRECTmANSWERmpeermreview
Ampersonmnoticesmthatmhermhouseplantsmthatmaremregularlymexposedmtommusicmseemmtomgrowmmo
remquicklymthanmthoseminmroomsmwithmnommusic.mAsmamresult,mshemdeterminesmthatmplantsmgrowm
bettermwhenmexposedmtommusic.mThismexamplemmostmcloselymresemblesmwhichmtypemofmreasoning
?
inductivemreasoning
deductivemreasoning
neither,mbecausemnomhypothesismwasmmade
bothminductivemandmdeductivemreasoningm-mCORRECTmANSWERminductivemreasoning
Themsmallestmunitmofmbiologicalmstructuremthatmmeetsmthemfunctionalmrequirementsmofm"living"mis
mthem________.
,organ
organelle
cell
macromoleculem-mCORRECTmANSWERmcell
Virusesmaremnotmconsideredmlivingmbecausemtheym________.
aremnotmmademofmcells
lackmcellmnuclei
domnotmcontainmDNAmormRNA
cannotmreproducem-mCORRECTmANSWERmaremnotmmademofmcells
Thempresencemofmammembrane-enclosedmnucleusmismamcharacteristicmofm________.
prokaryoticmcells
eukaryoticmcells
livingmorganisms
bacteriam-mCORRECTmANSWERmeukaryoticmcells
Amgroupmofmindividualsmofmthemsamemspeciesmlivingminmthemsamemareamismcalledma(n)m________.
family
community
population
ecosystemm-mCORRECTmANSWERmpopulation
, Whichmofmthemfollowingmsequencesmrepresentsmthemhierarchymofmbiologicalmorganizationmfrommth
emmostminclusivemtomthemleastmcomplexmlevel?
organelle,mtissue,mbiosphere,mecosystem,mpopulation
organ,morganism,mtissue,morganelle,mmolecule
organism,mcommunity,mbiosphere,mmolecule,mtissue,morgan
biosphere,mecosystem,mcommunity,mpopulation,morganismm-
mCORRECTmANSWERmbiosphere,mecosystem,mcommunity,mpopulation,morganism
Whereminmamphylogeneticmtreemwouldmyoumexpectmtomfindmthemorganismmthatmhadmevolvedmmostm
recently?
atmthembase
withinmthembranches
atmthemnodes
atmthembranchmtipsm-mCORRECTmANSWERmatmthembranchmtips
Ifmxenonmhasmanmatomicmnumbermofm54mandmammassmnumbermofm108,mhowmmanymneutronsmdoesmi
tmhave?
54
27
100
108m-mCORRECTmANSWERm54
Atomsmthatmvaryminmthemnumbermofmneutronsmfoundminmtheirmnucleimaremcalledm________.
(2026/2027) UPDATE|EXAM
QUESTIONS WITH MULTIPLE
CHOICES |VERIFIED & REVISED
ANSWERS (NEW)!!!
ThemfirstmformsmofmlifemonmEarthmwerem________.
a.mplants
b.mmicroorganisms
c.mbirds
d.mdinosaursm-mCORRECTmANSWERmb.mmicroorganism
Amsuggestedmandmtestablemexplanationmformanmeventmismcalledmam________.
hypothesis
variable
theory
controlm-mCORRECTmANSWERmhypothesis
Whichmofmthemfollowingmsciencesmismnotmconsideredmamnaturalmscience?
biology
astronomy
physics
computermsciencem-mCORRECTmANSWERmcomputermscience
,Themtypemofmlogicalmthinkingmthatmusesmrelatedmobservationsmtomarrivematmamgeneralmconclusionmi
smcalledm________.
deductivemreasoning
themscientificmmethod
hypothesis-basedmscience
inductivemreasoningm-mCORRECTmANSWERminductivemreasoning
Themprocessmofm________mhelpsmtomensuremthatmamscientist'smresearchmismoriginal,msignificant,mlog
ical,mandmthorough.
publication
publicmspeaking
peermreview
themscientificmmethodm-mCORRECTmANSWERmpeermreview
Ampersonmnoticesmthatmhermhouseplantsmthatmaremregularlymexposedmtommusicmseemmtomgrowmmo
remquicklymthanmthoseminmroomsmwithmnommusic.mAsmamresult,mshemdeterminesmthatmplantsmgrowm
bettermwhenmexposedmtommusic.mThismexamplemmostmcloselymresemblesmwhichmtypemofmreasoning
?
inductivemreasoning
deductivemreasoning
neither,mbecausemnomhypothesismwasmmade
bothminductivemandmdeductivemreasoningm-mCORRECTmANSWERminductivemreasoning
Themsmallestmunitmofmbiologicalmstructuremthatmmeetsmthemfunctionalmrequirementsmofm"living"mis
mthem________.
,organ
organelle
cell
macromoleculem-mCORRECTmANSWERmcell
Virusesmaremnotmconsideredmlivingmbecausemtheym________.
aremnotmmademofmcells
lackmcellmnuclei
domnotmcontainmDNAmormRNA
cannotmreproducem-mCORRECTmANSWERmaremnotmmademofmcells
Thempresencemofmammembrane-enclosedmnucleusmismamcharacteristicmofm________.
prokaryoticmcells
eukaryoticmcells
livingmorganisms
bacteriam-mCORRECTmANSWERmeukaryoticmcells
Amgroupmofmindividualsmofmthemsamemspeciesmlivingminmthemsamemareamismcalledma(n)m________.
family
community
population
ecosystemm-mCORRECTmANSWERmpopulation
, Whichmofmthemfollowingmsequencesmrepresentsmthemhierarchymofmbiologicalmorganizationmfrommth
emmostminclusivemtomthemleastmcomplexmlevel?
organelle,mtissue,mbiosphere,mecosystem,mpopulation
organ,morganism,mtissue,morganelle,mmolecule
organism,mcommunity,mbiosphere,mmolecule,mtissue,morgan
biosphere,mecosystem,mcommunity,mpopulation,morganismm-
mCORRECTmANSWERmbiosphere,mecosystem,mcommunity,mpopulation,morganism
Whereminmamphylogeneticmtreemwouldmyoumexpectmtomfindmthemorganismmthatmhadmevolvedmmostm
recently?
atmthembase
withinmthembranches
atmthemnodes
atmthembranchmtipsm-mCORRECTmANSWERmatmthembranchmtips
Ifmxenonmhasmanmatomicmnumbermofm54mandmammassmnumbermofm108,mhowmmanymneutronsmdoesmi
tmhave?
54
27
100
108m-mCORRECTmANSWERm54
Atomsmthatmvaryminmthemnumbermofmneutronsmfoundminmtheirmnucleimaremcalledm________.
