Biology 101 First Exam chapters 1-3 questions with correct answers 2026

Biology 101 First Exam chapters 1-3
questions with correct answers 2026


Whatyareycharacteristicsyofylivingythingsy-yCORRECTyANSWERSy-
1.yLivingythingsycontainynucleicyacids,proteins,ycarbohydrates,yandylipids.y

2.yLivingythingsyareycomposedyofycells

3.yLivingythingsygrowyandyreproduce

4.yLivingythingsyuseyenergyyandyrawymaterials

5.yLivingythingsyrespondytoytheiryenvironment

6.yLivingythingsymaintainyhomeostasisy

7.yPopulationsyofylivingythingsyadaptyandyhaveyadaptytraits



Metabolismy-yCORRECTyANSWERSy-
refersytoyallychemicalyreactionsythatyoccurywithinytheycellsyofylivingythings.yMetabolicyactivitiesyextr
actyenergyyfromyvariousynutrientsyandytransformyitytoydoydifferentytypesyofywork.



Homeostasisy-yCORRECTyANSWERSy-
theyrelativelyyconstantyandyselfycorrectingyinternalyenvironmentyofyaylivingyorganism.yHomeostasis
ykeepsybodyytemperatureywithinyitsylimitsyforysurvival.




Adaptiveytraitsy-yCORRECTyANSWERSy-
traitsythatyhelpyitysurviveyandyreproduceyinyitsynaturalyhabitat



Populationy-yCORRECTyANSWERSy-individualsyinytheysameyspeciesylivingyinydistinctygeographicyarea



example:yfour-eyedybutterflyyfishylivingyinyaycoralyreef

, Communityy-yCORRECTyANSWERSy-
allylivingyspeciesythatycanypotentiallyyinteractyinyayparticularygeographicyarea



example:yallyspeciesylivingyinyaycoralyreef



Ecosystemy-yCORRECTyANSWERSy-
allytheylivingyorganismsyinyaycommunityyalongywithytheiryphysicalyenvironment



Biospherey-yCORRECTyANSWERSy-
Theypartyofytheyearthythatysupportsylife.yTheylayeryofytheyearthywhereylifeylives.



Example:yIfytheyearthywereyaybasketballytheybiosphereywouldybeytheyorangeypaint



Sciencey-yCORRECTyANSWERSy-
Aysystematicyapproachytoyansweringythoseyquestions,yaywayyofyacquiringyknowledgeythroughycaref
ullyydocumentedyinvestigationyandyexperimentation-ytheyscientificymethod



TheyScientificymethody-yCORRECTyANSWERSy-
1.yMakeycarefulyobservations,yandyaskyayquestionyaboutytheyobservation

2.yDevelopyaytestableyhypothesisyasyaypossibleyanswerytoyyouryquestion

3.yMakeyaypredictionybasedyonyyouryhypothesis,yandytestyitywithyaycontrolledyexperimenty

4.yDrawyayconclusionybasedyonytheyresultyofytheyexperimenty

5.yMakeynewypredictionsyandytestythem.



ControlledyExperimenty-yCORRECTyANSWERSy-
Anyexperimentywhereytheysubjectsybeingytestedyareysplityintoytwoygroups;ytheycontrolygroupyandyt
heyexperimentalygroup