Taxonomy - Eukaryotes Flashcards
1
Q
Diplomonads
A
- have two nuclei of equal size
- have *mitosomes
- key genera: giardia
2
Q
Parabasalids
A
- contain a parabasal body
- NO mitochondria
- have *hydrogenosomes for anaerobic metabolism
- live in intestinal tracts as parasites or symbionts
- key genera: Trichomonas
3
Q
Green algae
A
- chlorophytes
- mostly in freshwater
- unicellular or multicellular
- sexual and asexual reproduction
4
Q
Red algae
A
- rhodophytes
- mostly marine
- red from phycoerythrin (accessory pigment)
- increase depth, increase phycoerythrin
- Most multicellular, some unicellular
5
Q
secondary endosymbiosis
A
when a eukaryotic cell engulfed either a green or red alga
6
Q
Diplomonads and parabasalids
A
- unicellular
- flagellated
- no chloroplast
- *anoxic habitats
7
Q
mitosome
A
- no enzymes of the TCA
- no ETC
- involved in the maturation of iron-sulfur clusters
- reduced form of mitochondrion
8
Q
hydrogenosome
A
- present in eukaryotes whose **metabolism is strictly fermentative
- sometimes H2 consuming endosymbiotic archaea are also present: *primary endosymbiosis
9
Q
cysts
A
- protect cells against deleterious environmental conditions
- survive long periods of starvation
- survive infection by prokaryotes
10
Q
Euglenozoans
A
-unicellular flagellated eukaryotes
11
Q
kinetoplastid
A
- euglenozoan
- kinetoplast: mass of circular DNA present in their single, large mitochondrion**
- aquatic
12
Q
Euglenids
A
- nonpaethogenic
- phototrophic
- will lose chloroplasts if in dark for too long
- phagocytosis
13
Q
alveolates
A
- alveoli: sacs underneath the cytoplasmic membrane that fxn to help cells maintain osmotic balance
- ex: paramecium
- ciliates, dinoflagellates, apicomplexans
14
Q
ciliates
A
- cilia at some stage of life
- cilia used for motility and to obtain food
- two nuclei
- conjugatoin - exchange micronuclei
- can be parasites or symbionts
15
Q
dinoflagellates
A
- freshwater
- phototrophic
- two flagella: transverse and longitudinal
- free-living or symbionts with coral
