An unknown plant has a unique pigment molecule with the photosynthetic action spectrum that is the opposite of green plants. (That is, the pigment molecule absorption spectrum for Halobacterium has a peak where the green plant action spectrum has a trough). What wavelengths of light does this unknown plant absorb? For your reference, the absorption spectrum for a green plant is shown below. Absorbance of chlorophyll a. Rate of photosynthesis. 400 500 600 700 Violet Blue Green Yellow Orange Red Wavelength of light (nm)
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The graph shows the absorbance of chlorophyll a (solid line) and the rate of photosynthesis (dashed line) across different wavelengths of light. Show more…
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The graph below shows which wavelengths, in nanometers (nm), and corresponding colors of light are absorbed by the plant molecule chlorophyll a. Chlorophyll a is one of the molecules that plants use for photosynthesis. Which of the following would be an accurate analysis of the information shown? The least effective color of light for photosynthesis appears to be green. The least effective colors of light for photosynthesis appear to be orange and red. The most effective wavelengths of light for photosynthesis are between 450 and 550 nm. The least effective wavelengths of light for photosynthesis are between 600 and 700 nm.
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Chlorophyll is a photosynthetic molecule common in green plants. On a per-unit-wavelength basis, its ability to absorb visible light has two peaks, at $430 \mathrm{~nm}$ and $662 \mathrm{~nm}$. (a) Find the corresponding photon energies. (b) Use these peak wavelengths to explain why plants appear green.
Chlorophyll is a photosynthetic molecule common in green plants. On a per-unit-wavelength basis, its ability to absorb visible light has two peaks, at $430 \mathrm{nm}$ and $662 \mathrm{nm}$. (a) Find the corresponding photon energies. (b) Use these peak wavelengths to explain why plants are green.
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