*Which wavelengths of light drive the highest rates of photosynthesis? Select the two best answers. Light in the violet-blue and red portions of the spectrum is most effective in driving photosynthesis.
Which wavelength of light is most effective in driving photosynthesis?
The areas of the spectrum that drive photosynthesis are highest in the red end (600-700 nm), followed by the blue region (400-500 nm) and lastly, the green region (500-600 nm). These data show that between 50 and 75% of the green light is used in photosynthesis. Thus, Green light is necessary for photosynthesis.
Which wavelength of light is best absorbed by chlorophyll b?
Chlorophyll a absorbs violet and orange light the most. Chlorophyll b absorbs mostly blue and yellow light. They both also absorb light of other wavelengths with less intensity.
Which wavelengths of light do you predict will be absorbed by chlorophyll and which will be absorbed by the carotenoids?
Neither a or b absorb green light; because green is reflected or transmitted, chlorophyll appears green. Carotenoids absorb light in the blue-green and violet region and reflect the longer yellow, red, and orange wavelengths. Figure 8.2B.
What links photosystem 2 to photosystem 1 in the light reactions?
Additionally, because the electron transport chain links photosystem II to photosystem I, any interruption in the transport chain would also halt NADPH production.
Which row below identifies the wavelengths at which the rate of photosynthesis in spirogyra is greatest?
500 nm and 560 nm are in the green region of the electromagnetic spectrum, which is where the rate of photosynthesis would be highest.
Which wavelengths of light are the most effective in photosynthesis quizlet?
Since violet wavelengths have the most energy in the visible light range (due to their shorter wavelengths) they can provide the maximum energy for photosynthesis. If a plant is exposed to light with a wavelength of 500 nm, what color of light is the plant is explosed to?
What wavelength of light is most effective in driving photosynthesis quizlet?
An action spectrum plots the rate of photosynthesis at various wavelengths of visible light, and it shows that blue light with a wavelength of about 490 nm is effective in driving photosynthesis.
What wavelength of light in the figure is least effective for photosynthesis?
The green light is considered to be the least efficient wavelength for photosynthesis. During photosynthesis, if the plants are exposed to green wavelength, the rate at which the photosynthesis takes place will be the least. This is due to the presence of a green pigment known as chlorophyll.
Which wavelength of light is absorbed by chlorophyll?
As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.
What wavelengths of light are absorbed by chlorophyll a quizlet?
Chlorophyll a absorbs light in the violet-blue and the red ranges of the visible light spectrum; chlorophyll b is an accessory pigment to chlorophyll a, absorbing light in the blue and red-orange ranges. Neither pigment absorbs light in the green range, 500-600 nm.
How does light wavelength affect the rate of photosynthesis?
The wavelength of light is also important. PSI absorbs energy most efficiently at 700 nm and PSII at 680 nm. Light with a higher proportion of energy concentrated in these wavelengths will produce a higher rate of photosynthesis.
What wavelengths of visible light are absorbed by this pigment?
Chlorophyll, the green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects. This is why plants appear green to us. Black pigments absorb all wavelengths of visible light that strike them. White pigments reflect most of the wavelengths striking them.
Which colors of light are most effective for photosynthesis explain why?
Answer: Red light is more effective in photosynthesis because both the photosystems (PS I and PS II) absorb light of wavelengths in the red region (680 and 700 nm, respectively). Furthermore, blue light is absorbed by carotenoids, which pass the energy to the chlorophyll.
What does photosystem 1 do in photosynthesis?
Photosystem I (PSI) of photosynthesis provides reducing power to reduce NADP to NADPH, which is required for carbon fixation and other synthetic processes.
Which process is most directly driven by light energy?
Photosynthesis: Photosynthesis is the process by which the chlorophyll molecules convert the light energy into chemical energy where there is the fixation of inorganic carbon into organic carbon with the help of light and provides food for the ecosystem.
What is a photosystem in photosynthesis?
Photosystems are the functional units for photosynthesis, defined by a particular pigment organization and association patterns, whose work is the absorption and transfer of light energy, which implies transfer of electrons. Physically, photosystems are found in the thylakoid membranes.
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