Protozoa

protozoa

single celled eukaryotic organism that lack cell walls, can be free living or parasitic

endosymbiotic hypothesis

either a bacteria and archaean fused or an archaean phagocytized a bacteria and over time the bacteria becomes a mitochondria.

secondary endosymbiosis

where chloroplasts came from. an early eukaryote phagocytized a cyanobacteria

evidence for endosymbiosis

mitochondria and chloroplasts have their own DNA which is similar to bacterial DNA, mitochondria has two membrane layers, chloroplasts have 4

mixotrophs

use heterotrophy and autotrophy. sometimes a heterotrophic protist engulfs an autotrophic protist and doesn’t digest it but instead uses the energy it produces