Biology 101, Exam 2 QUESTIONS WITH CORRECT ANSWERS 2026

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