Bio Ch 24 2
Terms
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- Protists
- unicellular, colonia or simple multicellular
- colony
- loosely connected groups of cells
- coenocytic
- multinucleate mass of cytoplasm
- Protist's variation of motility
-
-pseudopodia (cytoplasmic extensions)
-flexing individual cells
-gliding
-cilia
-flagella - zooflagellates
-
-use flagella
-heterotrophic
-unicellular
-ingestors - Diplomonads
-
-type of zooflagellate
-mo mitochondria & golgi (anaerobic)
Guardia- parasitic diplomonad - Trichonymphs
-
-live in termites guts
-type of zooflagellate
-lack mitochondria but have golgi
-enable termites to digest cellulose - Trypanosomes
-
-type of zooflagellate
-1 flagella
-causes African sleeping sickness - Choanoflagellate
-
-collared zooflagellates
-single flagellum surronded by a collar.
-anestors of sponges - Ciliates
-
-protozoan group
-phagocytosis for food
-contractile vacoules
-macro and micronucleus
ex: paramecium - contractile vacoule
-
-control water regulation
-expels excess water - Micronuclei
-
diploid
reproduction - Macronucleus
-
polyploid
cell metabolism & growth - Apicomplexans
-
protozoan group
parasitic
flex & glide
ex: plasmodium (causes malaria) - Cercozoa
- have outer shells (tests) that have cytoplasmic projections
- Foraminiferans
-
-type of cercozoa
-have conspicuos tests
-White cliffs of Dover in England - Actinopods
-
-type of cercozoa
-axopods (ctyoplasmic projections) are conspicuos - Ameobozoa
-
-lobose pseudopodia ("false foot)
-phagoctyosis - lobose
- rounded and wide