BIOCHEMISTRY (LOOSELEAF)-W/ACCESS
9th Edition
ISBN: 9781319425784
Author: BERG
Publisher: Macmillan Higher Education
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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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provide a description of the phototransduction pathway from the abosorption of light to the transmission of a nerve impulse to the brain.
Can you please write in 10 senetences that I can understand well ...
Of the visible light spectrum, the rate of photosynthesis is worst under
high
Light
Absorbtion
low
地
400 450 500 550 600
Wavelength (nm)
Multiple Choice
carotenoids
chlorophyll a
- chlorophyll b
-
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650 700
1472
A
NA
What is the key role of light energy in the initial step of thephotosynthetic light reactions?
Chapter 34 Solutions
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- If 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_forward1arrow_forward
- Can someone help me understand this. A student set up an experiment to show the effect of light color on photosynthesis in Elodea plants. She filled two test tubes with distilled water and placed a piece of Elodea in each of the tubes. She added a drop of phenol red, which turns red in a basic solution and yellow in an acidic solution. She blew in each tube before placing the volumeters on the top of the tube. Why did she blow into the tube? to add oxygen to the tube to add carbon dioxide to the tube to add carbohydrates to the tube to add sodium bicarbonate to the tubearrow_forwardTo further investigate the cellular response in photoreceptor cells, we will now look at the actual effect of cGMP within the phototransduction pathway. Again, we will compare what happens in the dark and in the presence of light to understand how an electric signal is generated in either condition. Comparing both conditions (in the dark or under the light), researchers have measured the molar concentration of cytosolic cGMP and recorded the membrane potential of rod cells by placing micro-electrodes on either side of their plasma membrane (see figure below). A negative membrane potential means that there are more negatively charged ions inside the cell compared to outside the cell, or equivalently, that there are less positively charged ions inside the cell compared to outside the cell. ● A positive membrane potential means that there are more negatively charged ions outside the cell compared to inside the cell, or equivalently, that there are less positively charged ions outside the…arrow_forwardTo further investigate the cellular response in photoreceptor cells, we will now look at the actual effect of cGMP within the phototransduction pathway. Again, we will compare what happens in the dark and in the presence of light to understand how an electric signal is generated in either condition. Comparing both conditions (in the dark or under the light), researchers have measured the molar concentration of cytosolic CGMP and recorded the membrane potential of rod cells by placing micro- electrodes on either side of their plasma membrane (see figure below). • A negative membrane potential means that there are more negatively charged ions inside the cell compared to outside the cell, or equivalently, that there are less positively charged ions inside the cell compared to outside the cell. • A positive membrane potential means that there are more negatively charged ions outside the cell compared to inside the cell, or equivalently, that there are less positively charged ions outside…arrow_forward
- discuss the optical properties (delayed light emission) of: 1.) fruit and vegetables 2.) grainsarrow_forwardprovide Hypothesis and conclusion linking your observed trend with the functioning of the light reactions in plants. How does the amount of light received affect the light reactions of photosynthesis?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
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