| 31. | An even closer form of symbiosis may explain the origin of chloroplasts.
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| 32. | Each cell contains two brown chloroplasts which surround the nucleus.
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| 33. | Several more genera have lost their chloroplasts and feed entirely by phagocytosis.
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| 34. | The chloroplasts were presumably acquired by ingesting some green alga.
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| 35. | However, fucoxanthin-containing chloroplasts are also found among the haptophytes.
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| 36. | The metabolic state of the chloroplast changes considerably between night and day.
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| 37. | The complete > 200 Kb chloroplast genome is available online.
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| 38. | This actually is suggested by the flow of the chloroplasts.
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| 39. | It is also present in some chloroplast and mitochondrial transcripts.
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| 40. | The term was coined in 1990 to describe chloroplast symbiosis.
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