Chapter 25.3 - Eukaryotic diversity Flashcards
1
Q
What are protists? And give two examples..
A
microscopic eukaryotes and seaweeds. Two protists are algae and protozoa
2
Q
What are the four major groups of eukaryotes
A
animals plants fungi and Protists
3
Q
What are the opisthokonta?
A
- Belong to animal and fungi
- known for the posterior pole/ flagella that allow them to move
4
Q
What is choanflagellas?
A
- they are opisthokonta is closely related to humans
- we know that because the genome of it, is found in animal signals
5
Q
What is microporia?
A
- they are opisthokonta that are closely related to fungi
- these parasites live in animals
6
Q
What are Archaeplastida’s?
A
- most are photosynthetic
-glaucytophes chloroplast closely related to the one found in cyanobacteria - plants
7
Q
How did photosynthesis spread to eukaryotic cells?
A
Hypothesis 1: One single endosymbiotic event
Hypothesis 2: Multiple endosymbiotic events
Because neither nuclear nor chloroplast genes match up they were a series of both
8
Q
Primary endosymbiosis
A
Cyanobacterium was acquired through heterokaryotic eukaryotes who engulfed cyanobacterium
9
Q
Secondary endosymbiosis
A
algae eukaryote acquired by another heterotrophic eukaryotes.
- nucleomorph is present
- red and green algae acquired cyanobacteria
- later lineages got red and green algae
10
Q
Amoebozoan’s are
A
- move or feed by extending pseudo
- have the ability to form a multicellular organism to move
- paramodial slime molds : haploid cells form zygotes for mitosis. When starving form coenocytic cell to search for food
- cellular molds are single-celled initially but come together when there is no food by releasing AMP chemical signals
11
Q
Stramenopies
A
- are a groupd of algae, kelp and protzona
- they have unusual flagella stiff hairs and sometimes a smooth one
