x
BIOL 2230 EXAM 2 QUESTIONS AND
x x x x x
x ANSWERS 2025/2026| 100% CORRECT
x x x
x VERIFIED ANSWERSx
x
What xrole xhas xendosymbiosis xplayed xin xevolution? x- x x
x
What xare xsome xdistinguishing xfeatures xof xProtists? x- x- xHighly xdiverse xgrouping xof
xeukaryotic xorganisms x
- Unicellular xor xmulticellular x
- Autotrophs x(algae) xor xHeterotrophs x(protozoa) x
- Motile xor xnon-motile x
- Cell xwalls xor xno xcell xwalls x
x
Most xare xharmless, xbut xsome xcause xdisease x
x
What xare xalgae xand xprotozoans? x- xPROTOZOANS: x
-pathogens x
- unicellular x
- heterotrophic x
- motile x(flagella, xcilia, xpsuedopods) x
- 2 xstages: xtrophozoite xand xcyst x
- no xcell xwalls x
- some xcause xdisease x
x
x
ALGAE:
x
-
xautotrophic
x
- xagar xproduced xby xred
xalgae
- xdiatoms x(oil xcomes xfrom
xdiatoms)
x
What xare xcysts xand xtrophozoites? x- xCyst- xdormant, xoften xtransmitted x
x
Trophozoite- xactive xfeeding xstate x
x
What xare xthe xArchaezoans, xEuglenozoans, xAmoebozoans, xand xAlveolates?
xExamples? x
x
- xArchaezoans- xMove xby xtwo xor xmore xflagella, xhave xnonfunctional
xmitochondria
x
(mitosomes), xanaerobic. xEx: xGiardia,
xTrichomonas
x
, Euglenozoans- xlarge xflagella xstrengthened xby xprotein xrod. xEx: xEuglena,
xTrypanosoma x
x
Amoebozoans- xmove xby xpseudopods. xEx: xEntamoeba xhistolytica, xAmoeba xproteus x
x
Alveolates- xnumerous xwater xfilled xvesicles xbeneath xthe xplasma xmembrane.
xEx: x
x
Paramecium,
xPlasmodium
x
What xdiseases xare xcaused xby xGiardia, xTrichomonas, xTrypanosoma, xEntamoeba,
xand x
x
Plasmodium? x- xGiardia- xfatty
xdiarrhea
x
Trichomonas- xvaginitis x
x
Trypanosoma- xsleeping xsickness x
x
Entamoeba- xdysentery x(bloody xdiarrhea) x
x
Plasmodium- xmalaria x
x
How xdoes xFlagyl xwork? x- xIt xinhibits xDNA xsynthesis x
x
What xare xdiatoms? xImportance? x- xCell xwalls xmade xof xglass. x
When xthe xdiatom xbreaks, xit xfalls xto xthe xfloor xof xthe xocean xand xthat xis xwhere xoil
xcomes xfrom. x
x
What xare xsome xdistinguishing xfeatures xof xfungi? x- x- xUnicellular x(yeast) xor
xmulticellular x
x
(mold)
x
-
xHeterotrophic
x
- xNon-
motile
x
- xCell xwalls xmade xof
xchitin
x
-
xDecomposers
x
- xSome xcause xdisease
x(mycosis)
x
What xare xsome xmetabolic xfeatures xof xfungi? x- x x
x
How xdo xyeast xreproduce? x- xBy xbinary xfission xor xbudding x
x
How xdo xmolds xreproduce? xSexual xvs. xasexual? x- xAsexually xor xsexually xby
xmeans xof x
BIOL 2230 EXAM 2 QUESTIONS AND
x x x x x
x ANSWERS 2025/2026| 100% CORRECT
x x x
x VERIFIED ANSWERSx
x
What xrole xhas xendosymbiosis xplayed xin xevolution? x- x x
x
What xare xsome xdistinguishing xfeatures xof xProtists? x- x- xHighly xdiverse xgrouping xof
xeukaryotic xorganisms x
- Unicellular xor xmulticellular x
- Autotrophs x(algae) xor xHeterotrophs x(protozoa) x
- Motile xor xnon-motile x
- Cell xwalls xor xno xcell xwalls x
x
Most xare xharmless, xbut xsome xcause xdisease x
x
What xare xalgae xand xprotozoans? x- xPROTOZOANS: x
-pathogens x
- unicellular x
- heterotrophic x
- motile x(flagella, xcilia, xpsuedopods) x
- 2 xstages: xtrophozoite xand xcyst x
- no xcell xwalls x
- some xcause xdisease x
x
x
ALGAE:
x
-
xautotrophic
x
- xagar xproduced xby xred
xalgae
- xdiatoms x(oil xcomes xfrom
xdiatoms)
x
What xare xcysts xand xtrophozoites? x- xCyst- xdormant, xoften xtransmitted x
x
Trophozoite- xactive xfeeding xstate x
x
What xare xthe xArchaezoans, xEuglenozoans, xAmoebozoans, xand xAlveolates?
xExamples? x
x
- xArchaezoans- xMove xby xtwo xor xmore xflagella, xhave xnonfunctional
xmitochondria
x
(mitosomes), xanaerobic. xEx: xGiardia,
xTrichomonas
x
, Euglenozoans- xlarge xflagella xstrengthened xby xprotein xrod. xEx: xEuglena,
xTrypanosoma x
x
Amoebozoans- xmove xby xpseudopods. xEx: xEntamoeba xhistolytica, xAmoeba xproteus x
x
Alveolates- xnumerous xwater xfilled xvesicles xbeneath xthe xplasma xmembrane.
xEx: x
x
Paramecium,
xPlasmodium
x
What xdiseases xare xcaused xby xGiardia, xTrichomonas, xTrypanosoma, xEntamoeba,
xand x
x
Plasmodium? x- xGiardia- xfatty
xdiarrhea
x
Trichomonas- xvaginitis x
x
Trypanosoma- xsleeping xsickness x
x
Entamoeba- xdysentery x(bloody xdiarrhea) x
x
Plasmodium- xmalaria x
x
How xdoes xFlagyl xwork? x- xIt xinhibits xDNA xsynthesis x
x
What xare xdiatoms? xImportance? x- xCell xwalls xmade xof xglass. x
When xthe xdiatom xbreaks, xit xfalls xto xthe xfloor xof xthe xocean xand xthat xis xwhere xoil
xcomes xfrom. x
x
What xare xsome xdistinguishing xfeatures xof xfungi? x- x- xUnicellular x(yeast) xor
xmulticellular x
x
(mold)
x
-
xHeterotrophic
x
- xNon-
motile
x
- xCell xwalls xmade xof
xchitin
x
-
xDecomposers
x
- xSome xcause xdisease
x(mycosis)
x
What xare xsome xmetabolic xfeatures xof xfungi? x- x x
x
How xdo xyeast xreproduce? x- xBy xbinary xfission xor xbudding x
x
How xdo xmolds xreproduce? xSexual xvs. xasexual? x- xAsexually xor xsexually xby
xmeans xof x
