Carotenoids absorb strongly:
Correct answer: D. Blue violet
- A. Red to orange
- B. Yellow green
- C. Yellow red
- D. Blue violet
Explanation
Carotenoids are pigments that appear yellow, orange, or red because they reflect those colors. However, they absorb light strongly in the blue-violet range, which complements chlorophyll's absorption of red and blue light, thus broadening the spectrum of light available for photosynthesis. The other options describe colors that carotenoids reflect rather than absorb.
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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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