Protists

Question 1

Protists

Answer 1

domain eukarya includes many groups of protists. Have a nucleus and other membrane-enclosed organelles. They have a cytoskeleton (that allows them to have asymmetric forms and to change shape as they feed, more or grow). Structurally and functionally diverse. Wide variety of life cycles. Most are unicellular

Question 2

Mixotrophs

Answer 2

combine photosynthesis and heterotrophic nutrition

Question 3

Endosymbiosis

Answer 3

a relationship between 2 species in which one organisms lives inside the cell or cells of another organism- the host

Question 4

how are eurkaryotes thought to have originated?

Answer 4

through endosymbiosis, when an archaeal (or close relative) host engulfed an alpha proteobacterium that would evolve into an organelle found in all eukaryotes (the mitochondrion).

Question 5

plastids are though to be descended from?

Answer 5

cyanobacteria engulfed by early eukaryotic cells

Question 6

what did plastid-bearing lineage eventually evolve into?

Answer 6

red and green algae

Question 7

secondary endoymbiosis

Answer 7

ingestion in the food vacuoles of heterotrophic eukaryotes and became endosymbionts themselves)

Question 8

4 super groups

Answer 8

1. excavata
2. SAR
3. Archaeplastida
4. Unikonta