Engelmann concluded that chlorophyll in the chloroplasts is responsible for photosynthesis based on the which of the following results?
A) Protons flow through the ATP synthase complex.
B) The action spectrum of photosynthesis matched the maximum production of oxygen by Spirogyra, with the greatest accumulation of bacteria in the blue and red regions of the spectrum.
C) Bacteria exposed to the action spectrum for photosynthesis showed no preference to any particular color of light.
D) Accessory pigments transfer some of the energy of excitation produced by green light to chlorophyll molecules.
E) Spirogyra cells each contain a long, spiral-shaped, emerald-green chloroplast embedded in the cytoplasm.

Question

Quizplus · Accepted Answer

Engelmann's experiment showed that the action spectrum of photosynthesis matched the areas where oxygen production was highest, indicated by the accumulation of bacteria, particularly in the blue and red regions of the spectrum. This demonstrated that chlorophyll is responsible for capturing light energy for photosynthesis.

Engelmann Concluded That Chlorophyll in the Chloroplasts Is Responsible for Photosynthesis