Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Chapter 34, Problem 7P
Interpretation Introduction
Interpretation:
Whether the light of 530nm is absorbed by the green pigment receptor only should be determined.
Concept introduction:
The photoreceptors are the cells involved in the sensation of the light. The photoreceptor cells present in the eyes are rods and cones. The cones are the cells involved in the detection of the color.
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What is the key role of light energy in the initial step of thephotosynthetic light reactions?
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high
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400 450 500 550 600
Wavelength (nm)
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carotenoids
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provide a description of the phototransduction pathway from the abosorption of light to the transmission of a nerve impulse to the brain.
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- Provide a description of the phototransduction pathway from the absorption of light to the transmission of a nerve impulse passes througharrow_forwardDescribe the series of processes that link light absorption with ATP synthesis (photophosphorylation).arrow_forwardDescribe the phototransduction cycle of photoreceptors?arrow_forward
- 100- 50- 400 450 500 550 600 650 700 Wavelength (nm) In the absorption spectrum shown above, what wavelength ranges are not efficiently absorbed by this photopigment? 400-450nm 450-700nm 450-650nm 650-700nmarrow_forwardIf plants described in problem 4 are illuminated by a combination of light of 680 nm and 700 nm, the oxygen production exceeds that of either wavelength alone. Explain.arrow_forwardThe green color of plants is explained by the wavelengths of light that are reflected, transmitted, and absorbed by the chlorophylls in the thylakoids. Which of the following statements is true? Plants appear green because chlorophylls reflect and transmit yellow and green wavelengths of light, and absorb red and violet-blue wavelengths of light. Plants appear green because chlorophylls reflect and transmit red and blue wavelengths of light, and absorb yellow and green wavelengths of light. Plants appear green because chlorophylls reflect and transmit red and blue wavelengths of light, and absorb white wavelength of light. Plants appear green because chlorophylls reflect and transmit white wavelength of light, and absorb red and violet-blue wavelengths of light.arrow_forward
- What are the similarities and differences between the phototropic response of a plant shoot and the response of the pupil of a human eyes in response to light?arrow_forwardIncreasing the intensity of the incident light but not itsenergy increases the rate of photosynthesis. Why is this so?arrow_forwardWhy do the reaction centers have different pigments rather than only the chlorophyls? quantitatively increasing the absorption photons narrowing coverage of the visible spectrum light increasing coverage of the visible spectrum light arranging light-harvesting complexe compensating for the high density of chlorophyllarrow_forward
- Why do you think the wavelengths 700-800 were least absorbed bu pigments in plants?arrow_forwardSuppose you conduct direct visible spectrophotometry with red fruit punch as your solution. Which wavelengths of light would you expect to be strongly absorbed? Which wavelengths are not strongly absorbed? Explain.arrow_forwardPick your favorite plant. Discuss the changes that will occur in the plant EITHER as it (a) transitions from night to day or (b) transitions from high light to low light.arrow_forward
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