25.3 first eukaryotes Flashcards
1
Q
when did eukaryotes evolve
A
2.1 bya
2
Q
endosymbiosis theory
A
that mitochondria and plastids (chloroplasts and stuff) were originally just prokaryotic cells living in larger cells
3
Q
serial endosymbiosis theory
A
that mitochondria evolved before chloroplasts
4
Q
evidence of endosymbiosis
A
- double membrane
- prokaryotic enzymes and transport systems
- prokaryotic splitting process
- single circular DNA unassociated with histones
- prokaryotic ribosomes
5
Q
how did endoplasmic reticulum and nuclear envelope form
A
infolding of membrane
