Plant Structure
Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria?

Both can live and function independently of the cell
Both strongly resemble prokaryotes, especially in size
Both have their own DNA
Both have their own ribosomes

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Plant Structure
Cellular metabolism is an example of

a series of reactions that defy the second law of thermodynamics
equilibrium metabolism
a series of reactions occurring under standard conditions
steady-state metabolism

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