What do the two peaks in the action spectrum represent?
Correct answer: A. Absorption of light
- A. Absorption of light
- B. Carbon dioxide consumption
- C. Emission of light
- D. Both Options A and B are correct
Explanation
The action spectrum represents the efficiency with which different wavelengths of light are absorbed by a photosynthetic pigment to drive the process of photosynthesis. The two peaks in the action spectrum indicate the wavelengths of light that are most efficiently absorbed by the photosynthetic pigment(s) in question. These absorbed photons provide the energy needed to initiate the light-dependent reactions of photosynthesis.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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