Theodor WEngelmann Illuminated a Filament of Algae with Light That Passed

question 68

Multiple Choice

Theodor W.Engelmann illuminated a filament of algae with light that passed through a prism,thus exposing different segments of algae to different wavelengths of light.He added aerobic bacteria and then noted in which areas the bacteria congregated.He found that the largest groups were found in the areas illuminated by the red and blue light.This experiment helped to determine the relationship between which of the following parameters?

• A)heterotrophic and autotrophic organisms
• B)wavelengths of light and the rate of aerobic respiration
• C)wavelengths of light and the amount of heat released
• D)wavelengths of light and the rate of photosynthesis
• E)the concentration of carbon dioxide and the rate of photosynthesis

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