Hypothesized to havearisen by endosymbiosis

1. The following internal adaptation may increase the ability ofa prokaryote to perform metabolic processes. (There may be morethan one answer)
_Respiratory membrand
_Plasmids
_Thylakoid membrand

2. Which of the following structures are hypothesized to havearisen by endosymbiosis? (there may be more than one answer)
_mitochondria
_nucleus
_endomembrane system
_plastids

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