prokaryotes and eukaryotes Flashcards
1
Q
what are prokaryotic cells
A
- 5th kingdom of living organisms
- only living prokaryote is bacteria
- they lack a nucleus and any membrane bound organelles
- pro = before, karyo = nucleus
2
Q
what are eukaryotic cells
A
- 4/5 kingdoms of living organisms
- animal, plant, fungal, Protoctista
- they have a nucleus and membrane bound organelles
3
Q
explain endosymbiosis
A
- when an organism lives within the body or cells of another organism, usually in a mutualistic relationship
- both organisms benefit
4
Q
give some evidence that endosymbiosis led to the evolution of mitochondria and chloroplasts from bacteria
A
- they are all the same size
- divide in 2 by binary fission
- have their own DNA which is circular
- have their own ribosomes which are 70s
