Biology 101, Exam 2 QUESTIONS
WITH CORRECT ANSWERS 2026
ThreeYcellYpartsYfoundYinYallYcells?Y-YCORRECTYANSWERSY-
DNA,YplasmaYmembrane,YandYcytoplasmYorYribosomes
WhatYisYtheYcellYtheory?Y-YCORRECTYANSWERSY-
TheYcellYisYtheYbasicYunitYofYlife,YallYlivingYthingsYareYmadeYupYofYoneYorYmoreYcells,YandYallYcellsYcom
eYfromYtheYreproductionYofYotherYcells
CellsYthatYdoYnotYhaveYaYnucleusYare:Y-YCORRECTYANSWERSY-prokaryotes
DNAYinYbacterial/prokaryoticYcellsYformsYa:Y-YCORRECTYANSWERSY-circle
DNAYinYeukaryoticYcellsYare:Y-YCORRECTYANSWERSY-linear
WhyYareYcellsYsmall?Y-YCORRECTYANSWERSY-
CellsYdoYnotYgetYveryYlargeYbecauseYtheYsurfaceYareaYtoYvolumeYratioYmustYbeYhighYtoYallowYforYtheY
readyYexchangeYofYmaterialsYinYandYoutYofYtheYcell
WhatYthreeYcellYpartsYareYfoundYONLYYinYplantYcells?Y-YCORRECTYANSWERSY-
cellYwall,Ychloroplasts,YandYtheYlarge/centralYvacuole
WhatYisYEndosymbiosis?Y-YCORRECTYANSWERSY-
TheYtheoryYthatYsomeYprokaryoticYcellsYengulfedYotherYprokaryoticYcellsYthusYformingYmembrane-
boundYstructuresY(likeYmitochondriaYorYchloroplasts)YandYultimatelyYgivingYriseYtoYeukaryoticYcells
, WhatYisYtheYorganelleYsiteYofYtheYreactionYcalledYCELLULARYRESPIRATIONYinYeukaryoticYcells?Y-
YCORRECTYANSWERSY-Mitochondria
WhatYdoYyouYcallYtheYsiteYofYPROTEINYandYLIPIDYSYNTHESISYinYeukaryoticYcellsYisYanYENDOMEMBR
ANEYSYSTEM?Y-YCORRECTYANSWERSY-theYEndoplasmicYReticulum
WhatYcanYyouYfindYinYtheYnucleus?Y-YCORRECTYANSWERSY-theYnucleolusYandYDNA
HowYcanYyouYdistinguishYbetweenYtheYROUGHYE.R.YandYtheYSMOOTHYE.R.?Y-YCORRECTYANSWERSY-
theYpresenceYofYRIBOSOMESYinYtheYroughYE.R.
WhatYareYtheYthreeYstructuresYthatYenableYcellsYtoYmove?Y-YCORRECTYANSWERSY-
cilia,Yflagella,YandYpsuedopods
WhatYisYfoundYwithinYtheYCHLOROPLASTSYandYisYtheYsiteYofYPHOTOSYNTHESIS?Y-
YCORRECTYANSWERSY-thylakoids
WhatYareYtheYfoldsYwithinYtheYMITOCHONDRIAYcalled?Y-YCORRECTYANSWERSY-cristae
WhatYareYcytoplasmicYbridgesYfoundYbetweenYPLANTYcells?Y(holesYinYtheYCELLYWALL)Y-
YCORRECTYANSWERSY-plasmodesmata
WhatYareYtheYcytoplasmicYbridgesYfoundYbetweenYANIMALYcells?Y(openingsYinYtheYCELLYMEMBRA
NES)Y-YCORRECTYANSWERSY-gapYjunctions
WhichYorganelleYcontainsYDIGESTIVEYENZYMES?Y-YCORRECTYANSWERSY-theYlysosome
WITH CORRECT ANSWERS 2026
ThreeYcellYpartsYfoundYinYallYcells?Y-YCORRECTYANSWERSY-
DNA,YplasmaYmembrane,YandYcytoplasmYorYribosomes
WhatYisYtheYcellYtheory?Y-YCORRECTYANSWERSY-
TheYcellYisYtheYbasicYunitYofYlife,YallYlivingYthingsYareYmadeYupYofYoneYorYmoreYcells,YandYallYcellsYcom
eYfromYtheYreproductionYofYotherYcells
CellsYthatYdoYnotYhaveYaYnucleusYare:Y-YCORRECTYANSWERSY-prokaryotes
DNAYinYbacterial/prokaryoticYcellsYformsYa:Y-YCORRECTYANSWERSY-circle
DNAYinYeukaryoticYcellsYare:Y-YCORRECTYANSWERSY-linear
WhyYareYcellsYsmall?Y-YCORRECTYANSWERSY-
CellsYdoYnotYgetYveryYlargeYbecauseYtheYsurfaceYareaYtoYvolumeYratioYmustYbeYhighYtoYallowYforYtheY
readyYexchangeYofYmaterialsYinYandYoutYofYtheYcell
WhatYthreeYcellYpartsYareYfoundYONLYYinYplantYcells?Y-YCORRECTYANSWERSY-
cellYwall,Ychloroplasts,YandYtheYlarge/centralYvacuole
WhatYisYEndosymbiosis?Y-YCORRECTYANSWERSY-
TheYtheoryYthatYsomeYprokaryoticYcellsYengulfedYotherYprokaryoticYcellsYthusYformingYmembrane-
boundYstructuresY(likeYmitochondriaYorYchloroplasts)YandYultimatelyYgivingYriseYtoYeukaryoticYcells
, WhatYisYtheYorganelleYsiteYofYtheYreactionYcalledYCELLULARYRESPIRATIONYinYeukaryoticYcells?Y-
YCORRECTYANSWERSY-Mitochondria
WhatYdoYyouYcallYtheYsiteYofYPROTEINYandYLIPIDYSYNTHESISYinYeukaryoticYcellsYisYanYENDOMEMBR
ANEYSYSTEM?Y-YCORRECTYANSWERSY-theYEndoplasmicYReticulum
WhatYcanYyouYfindYinYtheYnucleus?Y-YCORRECTYANSWERSY-theYnucleolusYandYDNA
HowYcanYyouYdistinguishYbetweenYtheYROUGHYE.R.YandYtheYSMOOTHYE.R.?Y-YCORRECTYANSWERSY-
theYpresenceYofYRIBOSOMESYinYtheYroughYE.R.
WhatYareYtheYthreeYstructuresYthatYenableYcellsYtoYmove?Y-YCORRECTYANSWERSY-
cilia,Yflagella,YandYpsuedopods
WhatYisYfoundYwithinYtheYCHLOROPLASTSYandYisYtheYsiteYofYPHOTOSYNTHESIS?Y-
YCORRECTYANSWERSY-thylakoids
WhatYareYtheYfoldsYwithinYtheYMITOCHONDRIAYcalled?Y-YCORRECTYANSWERSY-cristae
WhatYareYcytoplasmicYbridgesYfoundYbetweenYPLANTYcells?Y(holesYinYtheYCELLYWALL)Y-
YCORRECTYANSWERSY-plasmodesmata
WhatYareYtheYcytoplasmicYbridgesYfoundYbetweenYANIMALYcells?Y(openingsYinYtheYCELLYMEMBRA
NES)Y-YCORRECTYANSWERSY-gapYjunctions
WhichYorganelleYcontainsYDIGESTIVEYENZYMES?Y-YCORRECTYANSWERSY-theYlysosome