Exam2 Flashcards
(19 cards)
Major groups of excavata
diplomonads, parabasalids, euglenazoans
Tips of eugoenazoans (in excavata supergroup)
kinetoplastids & euglenids
What do diplomonads and parabasalids have in common?
- excavata supergroup
- modified mito
- lack plastids
- live in anaerobic environments
Characteristics of diplomonads
- excavata
- mitosomes = their reduced mito
- 2 nuclei & mult flagella
- parasites –> giardia
- get energy anaerobically
Characteristics of parabasalids
- excavata
- hydrogenosomes = their reduced mito
- get energy anaerobically
- incl trichomonas vaginalis–> pathogen that causes yeast infection
(T/F) euglenazoans can be predators, be photosynthesizers, be mixotrophs, and parasites
T
What do euglenazoans have in common
- excavata
- unique flagella
characteristics of kinetoplastids
- part of euglenazoans which is part of excavata
- in genus trypanosoma –> cause sleeping sickness and chagas’ disease
characteristics of euglenoids
- part of euglenazoans which is part of excavata
- have 1 or 2 flagella that emerge from pick at one end
- some are mixotrophs
- have pellicle, eyespot, detector, flagella in front
Which groups of excavata incl parasites?
diplomonads and euglenazoans
which group incl pathogen that causes yeast infection
parabasalids of excavata
which group incl pathogen that causes chagas’ disease and sleeping sickness
kinetoplastids of euglenazoans of excavata
“SAR” clade includes
stramenophiles
alveolates
rhizarians
stramenophiles of SAR clade incl
diatoms, golden algae, brown algae
Characteristics of stamenophiles
- incl most import photosynthetic organisms
- “hairy flagellum” paired w “loose flagellum”
characteristics of diatoms
- of stramenophiles of SAR
- unicellular
- glass-like (silica walls interlocking)
- make up phytoplankton that make up diatomaceous Earth –> fossil remnants of diatoms
characteristics of golden algae
- of stramenophiles of SAR
- photosynthetic or mixotrophs
- 2 flagella
- unicellular or colonial
characteristics of brown algae
- of stramenophiles of SAR
- largest and most complex of algae
- multicellular
- marine
- some properties analogous to plants
- alternation of generations
Which stramenophiles are unicellular?
diatoms and golden algae
