Plant Structure
Which of the following is not an electron carrier class in the electron transport chain?

Iron - sulfur proteins
Flavoproteins
Cytochrome c oxidase
Cytochromes

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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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