Question

multiple choice question which of the following is true about chlorophyll versus retinal? retinal is more efficient at capturing photons. retinal reflects green light. chlorophyll absorbs more kinds of photons. chlorophyll is more efficient at capturing photons.

Explanation:

• Analyze each option:
• Option 1: Retinal is involved in vision, but chlorophyll (in photosynthesis) is adapted to capture photons efficiently for energy conversion, so retinal is not more efficient at capturing photons.
• Option 2: Retinal is related to visual pigments (like in rhodopsin), and it doesn't reflect green light. Chlorophyll reflects green light (which is why plants are green), not retinal.
• Option 3: Chlorophyll has absorption peaks in red and blue - violet, while retinal (in visual pigments) is tuned to specific light for vision. Chlorophyll's role in photosynthesis requires it to absorb a range of photons (different wavelengths in visible spectrum) for energy, so it absorbs more kinds of photons compared to retinal which is more specialized for vision - related light capture.
• Option 4: As explained, chlorophyll is for photosynthesis and retinal for vision; retinal's efficiency in photon capture for its function is different, and chlorophyll is not more efficient in the way this option implies (retinal is efficient for its visual role, chlorophyll for photosynthetic energy capture, but the statement is incorrect as a direct comparison).

Answer:

Chlorophyll absorbs more kinds of photons.