The conversion of solar energy into chemical energy is carried out directly in:
Correct answer: B. Chlorophyll − a
- A. Chlorophyll - c
- B. Chlorophyll − a
- C. Bacteriochlorophyll
- D. Carotenoids
Explanation
Option B is correct. Chlorophyll a is the primary pigment responsible for the direct conversion of solar energy into chemical energy during photosynthesis. This process occurs in the light-dependent reactions where chlorophyll a absorbs sunlight, leading to the production of ATP and NADPH. These molecules are then used in the light-independent reactions to synthesize glucose. Chlorophyll c and carotenoids serve as accessory pigments, transferring energy to chlorophyll a, but do not directly convert solar energy. Bacteriochlorophyll is specific to bacteria and does not play a direct role in the photosynthesis of plants, algae, or cyanobacteria.
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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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