Taxonomy of Eukaryota Flashcards
What is done to figure out phylogeny of the eukarya
Sequencing of 18S rRNA
Relationship between 18S rRNA is ____ for eukarotes that 16S rRNA genes is for prokaryotes
Weaker
As 18S rRNA is not so reliable, what other tests are used for eukaryotes
MLST
What is secondary endosymbiosis
Uptaking eukarya by abother eukarya
Green algae are also called
Chlorophytes
Green algae are closely related to
Plants
Most green algae inhibit
Freshwater, but some are marine or terrestrial
How many flagellas green algae have
Can be one, but can be multiple
How do green algae reproduce
Sexually and asexually
Endolithic algae grow ___(place)
Inside porous rocks
Red algae are also called
Rhodophytes
Where do red algae live
Mostly marine, but some freshwater and terrestrial
Red color of red algae is coming from
Phycoerythrin
Phycoerythrin is more produced in
Cells that are living at a greater depth
Are red algae uni-, multicellular?
Most species re multicellular, some are unicellular
Example of unicellar red algae and where does it live
Galdieria, lives in hot acidic hot springs
Explain secondary endosymbioses
When green and red algae are converged from primary endosymbiosis, some cells uptook green algae and became euglenids and chlorarachniophytes, with chloroplast from green algae.
Other cells took red algae and became stramenopiles, apicomplexans, dinoflagellates
General characterization of diplomonads and parabasalids
- Unicellular
- Flagellated
- Lacks chloroplasts
- Live in anoxic environment
How many nuclei does diplomonads have
Two nuclei of equal size
What do diplomonads have instead of mitochondria?
Mitosomes
Key genera of diplomonads and what do they cause
Giardia (cause giardiasis)
What do parabasalids have to support Golgi complex
A parabasal body
As parabasalids lack mitochondria, what do they have
Hydrogenosomes for anaerobic metabolism
Key genera of parabasalids
Trichomonas