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Engelmann (1882) observed that motile aerobic bacteria accumulated near areas of a filament of Spirogyra which were illuminated by red or blue light but they did not accumulate near a filament illuminated with green light. From this, he inferred that: |
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Answer» Engelmann (1882) observed that motile aerobic bacteria accumulated near areas of a filament of Spirogyra which were illuminated by red or blue light but they did not accumulate near a filament illuminated with green light. From this, he inferred that: |
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