Engelmann Concluded That Chlorophyll in the Chloroplasts Is Responsible for Photosynthesis

question 12

Multiple Choice

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.

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Definitions:

Optic Nerve

A crucial nerve in the eye that transmits visual information from the retina to the brain.

Axon Fibers

Long, slender projections of nerve cells (neurons) that conduct electrical impulses away from the neuron's cell body.

Ganglion Cells

Neurons located in the retina that receive visual information from photoreceptors and transmit it to the brain.

Opponent-process Theory

A psychological and neurological model that explains how humans perceive colors as the brain processes signals from the eyes in an antagonistic manner.