Describe the Experiment that determine ideal wavelengths for photosynthesis
The best wavelengths of visible light for photosynthesis fall within blue range( 425-450nm) and the red range ( 600-700nm)
Therefore , the best light sources for photosynthesis should ideally emit in the blue and red ranges
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Describe the Experiment that determine ideal wavelengths for photosynthesis
In this experiment, you will measure the rate of photosynthesis in isolated chloroplasts using the dye 2,6-dichloroindophenol (DPIP). The transfer of electrons during the light-dependent reaction results in the production of H+. This H+ ion can reduce DPIP, changing its color from blue to clear. The color can be quantitatively measured with a spectrophotometer. However, in this experiment, you will qualitatively analyze your data. Write a detailed conclusion for your experiment. How did light affect the time it took for...
6. What wavelengths of light provide energy for photosynthesis? 7. What does the light do? 8. Summarize photosynthesis in a chemical reaction. What is oxidized and what is reduced? 9. What part of the visible light spectrum is best at driving photosynthesis? 10. What happens in the light harvesting complex? The reaction center complex? 11. What donates the electrons to the primary electron acceptor in photosystem I? What replaces those electrons? 12. What donates electrons to photosystems 1? 13. How...
How do we know if photosynthesis or cellular respiration is occurring in our experiment? How do we determine the progress in this experiment?(Hint: What would be the dependent variable(s) of our experiment?)
Experimental Inquiry: Which Wavelengths of Light Drive Photosynthesis? WORD O ( 10 of 11 T diamento 500 600 Wavelength of light (nm) Add om so by man s on Education, the By measuring oxygen production with aerotactic bacteria Engelmann described an action spectrum for photosynthesis. The action spectrum (indicated by the black line plot in the image above) shows the relative effectiveness of each color of light in diving photosynthesis What assumptions did Engelmann make in order to conclude that...
Photosynthesis and Plant Nutrition. Complete the following paragraph to describe the role of photosynthesis in plant nutrition. Answer choices may be ised more than once or not at all. Photosynthesis and plant nutrition Complete the following paragraph to describe the role of photosynthesis in plant nutrition. Answer choices may be used more than once or not at all. mitochondria Plants are considered to be autotrophs because of their ability to produce their own food. light-independent reactions sunlight, carbon dioxide, and...
Describe three different mechanisms or devices for selecting specific wavelengths for use in spectrophotometers. 3.What are the ideal characteristics of the cuvets used in visible/UV spectrophotometers? ans as soon as possible . Define reflection, refraction and light scattering. 10.Show graphically the relationship between concentration and % transmittance
Describe the ecological relationship between photosynthesis and cellular respiration.
2. Briefly propose a simple experiment that would demonstrate the rate of photosynthesis by examining the "first stage."
Chlorophyll a Absorption Spectrum of Visible Light Absorption of light (%) Which of the following wavelengths of light are not absorbed by chlorophyll a to power photosynthesis? Check all that apply. 430 nm 660 nm 530 nm 400 450 500 550 600 Wavelength (nm) 650 700 wavelength (nm) In a laboratory experiment, you take three plants and put them each under a lamp that mimics sunlight. You have three colored light filters that fit over each of the lamps: a...
D Question 9 - Absorbance of chterophylla ---Rate of photosynthesis 500 Violet ellow Orange The above figure shows the absorption spectrum for chlorophylla and balong with the action spectrum (shown as rate of photosynthesis) for photosynthesis Why ar B aths Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. Oxygen given off during photosynthesis interfers with the absorption of light Other pigments absorb light in addition to chlorophylla and be Bright sunlight destroys photosynthetic pigments Aerobic bacteria...