BIOL 2230 Exam 2 Questions and Answers

BIOL 2230 Exam 2 Questions and
ii ii ii ii ii ii




ii
Answers ii




What iirole iihas iiendosymbiosis iiplayed iiin iievolution? ii- ii ii
ii

What iiare iisome iidistinguishing iifeatures iiof iiProtists? ii- ii- iiHighly iidiverse iigrouping iiof
iieukaryotic iiorganisms ii

- Unicellular iior iimulticellular ii
- Autotrophs ii(algae) iior iiHeterotrophs ii(protozoa) ii
- Motile iior iinon-motile ii
- Cell iiwalls iior iino iicell iiwalls ii
ii

Most iiare iiharmless, iibut iisome iicause iidisease ii
ii

What iiare iialgae iiand iiprotozoans? ii- iiPROTOZOANS: ii
-pathogens ii
- unicellular ii
- heterotrophic ii
- motile ii(flagella, iicilia, iipsuedopods) ii
- 2 iistages: iitrophozoite iiand iicyst ii
- no iicell iiwalls ii
- some iicause iidisease ii
ii
ii
ALGAE:
ii
-
iiautotrophic
ii
- iiagar iiproduced iiby iired
iialgae


- iidiatoms ii(oil iicomes iifrom
iidiatoms)
ii

What iiare iicysts iiand iitrophozoites? ii- iiCyst- iidormant, iioften iitransmitted ii
ii

Trophozoite- iiactive iifeeding iistate ii
ii

What iiare iithe iiArchaezoans, iiEuglenozoans, iiAmoebozoans, iiand iiAlveolates?
iiExamples? ii
ii
- iiArchaezoans- iiMove iiby iitwo iior iimore iiflagella, iihave iinonfunctional
iimitochondria
ii
(mitosomes), iianaerobic. iiEx: iiGiardia,

iiTrichomonas
ii

Euglenozoans- iilarge iiflagella iistrengthened iiby iiprotein iirod. iiEx: iiEuglena, iiTrypanosoma
ii
ii

Amoebozoans- iimove iiby iipseudopods. iiEx: iiEntamoeba iihistolytica, iiAmoeba iiproteus ii
ii

, Alveolates- iinumerous iiwater iifilled iivesicles iibeneath iithe iiplasma iimembrane.
iiEx: ii
ii
Paramecium,
iiPlasmodium
ii

What iidiseases iiare iicaused iiby iiGiardia, iiTrichomonas, iiTrypanosoma, iiEntamoeba,
iiand ii
ii
Plasmodium? ii- iiGiardia- iifatty
iidiarrhea
ii

Trichomonas- iivaginitis ii
ii

Trypanosoma- iisleeping iisickness ii
ii

Entamoeba- iidysentery ii(bloody iidiarrhea) ii
ii

Plasmodium- iimalaria ii
ii

How iidoes iiFlagyl iiwork? ii- iiIt iiinhibits iiDNA iisynthesis ii
ii

What iiare iidiatoms? iiImportance? ii- iiCell iiwalls iimade iiof iiglass. ii
When iithe iidiatom iibreaks, iiit iifalls iito iithe iifloor iiof iithe iiocean iiand iithat iiis iiwhere iioil
iicomes iifrom. ii
ii

What iiare iisome iidistinguishing iifeatures iiof iifungi? ii- ii- iiUnicellular ii(yeast) iior
iimulticellular ii
ii
(mold)
ii
- iiHeterotrophic
ii
- iiNon-

motile
ii
- iiCell iiwalls iimade iiof
iichitin
ii
-
iiDecomposers
ii
- iiSome iicause iidisease

ii(mycosis)
ii

What iiare iisome iimetabolic iifeatures iiof iifungi? ii- ii ii
ii

How iido iiyeast iireproduce? ii- iiBy iibinary iifission iior iibudding ii
ii

How iido iimolds iireproduce? iiSexual iivs. iiasexual? ii- iiAsexually iior iisexually iiby iimeans
iiof ii
ii
spores
ii
ii
What iiare

iihyphae?


What iiare iispores? ii- iiHyphae- iifilaments iiof iifungi
iicells