The theory that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell

and ultimately evolved mutualistic relationships with the host cell is termed the:a.
obligative symbiotic theory.
b. heterosymbiont theory.
c. endosymbiont theory.
d. facultative symbiotic theory.
e. autotrophic symbiotic theory.


C

Biology & Microbiology

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Resident biota of the gastrointestinal tract include ________.

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