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nmdcat.online June 27, 2026

The presence of conjugated double bonds in the carbon chains of carotenoids is responsible for their

A. Role as an energy storage molecule in animal cells
B. Ability to act as a structural framework in fungal cell walls
C. Capacity to absorb visible light and act as pigments
✓
D. Function as a primary source of nitrogen for plants

📝 Explanation

The alternating single and double bonds (conjugation) in carotenoids create a delocalized electron system that can absorb specific wavelengths of visible light. This makes them colored pigments (e.g., orange in carrots, red in tomatoes) that play roles in photosynthesis and photoprotection.

📖 Additional Information

  • Role as an energy storage molecule in animal cells
  • Ability to act as a structural framework in fungal cell walls
  • Capacity to absorb visible light and act as pigments
  • Function as a primary source of nitrogen for plants

The alternating single and double bonds (conjugation) in carotenoids create a delocalized electron system that can absorb specific wavelengths of visible light. This makes them colored pigments (e.g., orange in carrots, red in tomatoes) that play roles in photosynthesis and photoprotection.

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