BIO 101 Exam -1 Questions and Answers

BIO 101 Exam #1 Questions and Answers
WhatAisABiology?A-ACORRECTAANSWERSA-StudyAofAlife;AencompassesAeverything
-biomolecularAbiologyAandAtechnologyAhaveAbroughtAaroundAaAnewAeraAforAbiology
WhatAareAtheAmajorAcharacteristicsAofALife?A-ACORRECTAANSWERSA-
1)AreproductionA(DNAA(deoxyriboseAnucleicAacid);AdoubleAhelixAshape;AstoresAgeneticAinfo
)
2)AcellularArepsirationA(usedAtoAcreatAenergy)A(metabolism;AneedAitAtoAperformAbasicA
functionsAofAlife;AfoodA(carbs,Aproteins,Alipids/fats,Avitamins/minerals)
3)Aadaptation/evolveA(overAlargeAperiodsAofAtimesAtraitsAofAorganizations)
Amodified

4)AgrowthAandAdevelopmentA(DNAAlaysAoutAtheA"plan")
5)AorganizationA(veryAspecific;AorganizationAofAorgans/structure)
6)AcellsA(basicAbuildingAblocksAofAlife;AneedAonlyAoneAtoAbeAconsideredAliving)
7)ArespondA(responseAtoAstimuliA(light,Atouch,Aheat,Aetc.);AneedAinAorderAtoAsurvive)
WhatAisAaAcell?A-ACORRECTAANSWERSA--AbasicAbuildingAblocksAofAlife
-AnotAalwaysAapparent;AfirstAseenAwithAaAmicroscope
-AcellsAwereAdiscoveredAbyAHookAinA1655
-AfirstAcellsAdiscoveredAwereAfromAcork
-
AtheoryAwasn'tAgenerallyAacceptedAdueAtoAtheAchallengeAofAtryingAtoAconvinceApeopleAofAthi

sAdrasticAchange
WhatAisAcellAtheory?A-ACORRECTAANSWERSA--AproposedAinA1800'sA
-AlowestAlevelAofAstructureAperfomsAallAchracteristicsAofAlife
-AariseAfromApreviouslyAexistingAcells
WhatAisAmetabolism?A-ACORRECTAANSWERSA--AenergyAbreakdown;AneededAforAfood
-AglucoseAisAtheA"best"
A-AC6H12O6A(formulaAforAglucose)

-AbreaksA(catabolicAreaction)AdownAtoAcarbonAdioxideAandAwaterA[ACO2A+AH2O]
DifferenceAbetweenAanabolicAandAcatabolicAreactions?A-ACORRECTAANSWERSA--
Aanabolic-AbuildingAupAof Amolcules,Aetc.

A-Aie:AanabolicAsteroidsA(buildAupAmuscle)

-Acatabolic-AbreakingAdownAofAmolecules
BeanABeetleALabA-ACORRECTAANSWERSA--AlearnAhowAtoAdetermineAifAaliveAorAdead
-AifAalive,AbeetlesAshouldAbeAgivingAoffAcarbonAdioxide
-AifAdead,AbeanAbeetlesAmayAbeAgivingAoffACO2AbutAonlyA
AbecauseAtheAdecompositionAprocess

-ACO2AmeasuredAinAppm
-AcalculateAamountAperAbeanAbeetle
AxA(ppm)/AnumberAofAbbA=Appm/bb

AeveryA15AminsA=A[xA/A#AofAbb]A/A15

AeveryA1AhourA=A[x/A#of Abb]AxA4

AeveryAsecA=A[xA/A#AofAbb]A/A60

-AusedAloggerproAprgm;AusedACO2Aprobe

, AreAvirusesAalive?A-ACORRECTAANSWERSA--AdependsAonAwhatAyouAargue
-AreliesAonAaAhostAcellAtoAreproduce
WhatAisAscience?A-ACORRECTAANSWERSA--AlatinA"toAknow"
-AaskingAquestionsAaboutAnature
-AbelieveAquestionsAcanAbeAanswered
StepsAofAtheAScientificAMethodA-ACORRECTAANSWERSA-1)AMakeAanAObservation
2)AAskAaAquestion
3)AFormAaAHypothesisA("if,Athen"Astatement)
A-AacceptA(agreeAwithAconclusions)

A-ArejectA(disagree,AcontinueAtesting)

4)AExeperimentalADesign/Atesting
5)AFormAaAconclusion
ControlAinAaAexperimentA-ACORRECTAANSWERSA--AmustAalwaysAhaveAaAcontrolA
-AdoesAnotAhaveAvariables
-AdoesAnotAchange;AwillAnotAbeAaffected
WhatAisAaAscientificAtheory?A-ACORRECTAANSWERSA--
AnotAjustAanAexplanationAforAsomething

-AhasAbeenAdeveloped/tested/scrutinized/challenged/Areviewed,Aetc.
-AgenerallyAacceptedAbyAwholeAscientificAcommunityA
-Aie:AtheoryAofAgravity,AatomicAtheoryAofAmatter
pHA-ACORRECTAANSWERSA--AmeasuresAacidsAandAbases
-AscaleAfromA0-14
-acidsA(AH+Aions):ArangeAfromA0-6/7
-neutralA:A7
-AbasicA(OH-Aions)A7/8-14
-AmostAofAwhatAweAeatAorAdrinkAisAacidic;AhouseholdAcleaners,Aetc.AareAmostAlikelyAbasic
-AplantsAtendAtoAuseAbasicAcompundsAasAaAmeansAofAdefenseAagainstApredators
WhoAisAFrancescoARedi?A-ACORRECTAANSWERSA--
AconductedAfirstA"controlled"Aexperiment

-AtestedAwhetherAlifeAcouldAariseAspontaneously
-AlivingAthingsAvs.AbiogenesisA(cameAfromAlife)
-AtookA4AdifferentAanimalsAandAusedAaAcontrolAgroupA(coveredAitAfromAflies)
-
AfindingsAwereAnotAacceptedAatAfirst;AideaAofAspontaneousAlifeAdidAnotAgoAawayAuntilAPaste

ur
MicroscopesA-ACORRECTAANSWERSA--AwindowsAtoAtheAworldAofAcells
-Atypes:AcompoundA(light),AelectronA(scanningAandAtransition)
-ApartsAofAaAmicroscope
A1)AeyepieceA(whatAyouAlookAthrough)

A2)AocularAlensA(AtubeAthatAaddsA10AxAtheAmagnification)

A3)AobjectiveAlensA(ArevolvingAnoiseApiece:A4x,A10x,A40x)

A-AmagnificationAisAactually:A40x,A100x,A400Ax

A4)AstageA(holdsAtheAspeciman,AmovesAup/down/left/right)

A5)AslideAclipA(holdsAtheAslideAinAplace)

A6)AcondensorA(allowsAlightAtoApassAthrough;AcanAadjust)

A8)AlightAsource