Which chlorophyll transfers energy to chlorophyll a?
Correct answer: D. Both B and C
- A. Chlorophylls - a
- B. Chlorophylls - b
- C. Carotenoids
- D. Both B and C
Explanation
Both chlorophyll b and carotenoids transfer energy to chlorophyll a during photosynthesis. These pigments are known as accessory pigments because they assist in capturing additional light energy that chlorophyll a cannot absorb efficiently. Chlorophyll b absorbs light mainly in the blue and red-orange regions of the spectrum, while carotenoids absorb primarily blue and violet light. The energy they capture is then transferred to chlorophyll a, which uses it to drive the light-dependent reactions of photosynthesis. In this way, chlorophyll b and carotenoids broaden the range of light wavelengths utilized and enhance the overall efficiency of photosynthesis in plants and algae.
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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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