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Biology-Endosymbiotic Theory (Dr. Margulis)

Biology7 CardsCreated 10 months ago

This deck covers key concepts of the endosymbiotic theory, including its definition, evidence, and processes involved in the evolution of eukaryotic cells.

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Endosymbiotic Theory

Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes;, Mitochondria from chloroplasts;, It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms.

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Key Terms

Term
Definition
Endosymbiotic Theory
Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes;, Mitochondria from ch...

Picture

http://www.google.com/url?sa=i&source=imgres&cd=&ved=0CAkQjRwwAGoVChMIidP5if2iyAIVjzqICh2rCwRS&url=https...

Evidence:
Mitochondria have 2 membranes;, have own DNA;, have own ribosomes;, have own tRNA molecules;, have own RNA polymerace;, have own DNA polymer ace;, at ...
symbioses
two organisms together
endosymbiotic
inside one another
Mitochondria
bigger cell captures smaller cell, which now has two membranes; smaller cell gets ATP from big cell

Related Flashcard Decks

TermDefinition
Endosymbiotic Theory
Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes;, Mitochondria from chloroplasts;, It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms.

Picture

http://www.google.com/url?sa=i&source=imgres&cd=&ved=0CAkQjRwwAGoVChMIidP5if2iyAIVjzqICh2rCwRS&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FSymbiogenesis&psig=AFQjCNHOGnOvYoB1iKkVZpoFnkmFPjzX8g&ust=1443847462128294

Evidence:
Mitochondria have 2 membranes;, have own DNA;, have own ribosomes;, have own tRNA molecules;, have own RNA polymerace;, have own DNA polymer ace;, at one time were free, living cells
symbioses
two organisms together
endosymbiotic
inside one another
Mitochondria
bigger cell captures smaller cell, which now has two membranes; smaller cell gets ATP from big cell
actions
- the primitive heterotrophic eukaryote is entered by proteobacterium and avoids digestion., - becomes endosymbiant; cell within another, - smaller cell gets ATP from bigger cell, - proteobacterium is eventually assimilated and becomes a mitochondria, - some eukaryotes go to acquire additional endosymbiants and and the cyanobacteria become chloroplasts