Which of the following was derived from an ancestral photosynthetic cyanobacterium? O Mitosome O chloroplast O Mitochondria O Hydrogenosome
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Which of the following was derived from an ancestral cyanobacterium? A- chloroplast B- flagella C- mitochondrion D- mitosome
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The first photosynthetic organisms on Earth developed distinct mechanisms of electron transport for the purpose of generating chemical energy from sunlight. Eventually, these photosystems were joined together into a single, more efficient system by more complex single-celled organisms. The free-living single-celled organism, still abundant on Earth today, is thought to be related to the photosynthetic organelle in plants because they both still share these same ancestral electron transport systems. chloroplast mitochondria purple sulfur bacteria green sulfur bacteria cyanobacteria
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According to the endosymbiosis theory, what type of organism is the original ancestor of the chloroplast? a. a photosynthetic archaean b. a cyanobacterium c. an algal-like, primitive photosynthetic eukaryote d. a modified mitochondrion
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