The substances that absorb visible light are called
Correct answer: C. Pigments
- A. Radioactive substances
- B. Bioluminescent substances
- C. Pigments
- D. Fluorescent substances
Explanation
Pigments are substances that absorb visible light, which is crucial in processes such as photosynthesis, where they capture light energy. Unlike pigments, radioactive substances do not interact with light in this way; they emit radiation due to nuclear instability. Bioluminescent substances produce light through biochemical reactions, not by absorption. Fluorescent substances absorb light but re-emit it, rather than absorbing it for processes like photosynthesis.
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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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