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"Photosynthesis is a process in which light energy is captured and stored by an organism, and the stored energy is used to drive cellular processes," (Blankenship, p. 1). Photosynthesis doesn't just happen in green plants; it can occur in bacteria, as well. It occurs when light- harvesting molecules absorb energy in the form of light and transfer it to a reaction center, where light energy is converted to chemical energy. Most of us know about chlorophyll as the light-harvesting molecule, but there are many forms of chlorophyll found in different organisms. However, they all have similar properties when interacting with light. PHOTOSYNTHETIC PIGMENTS 1.6 C 0.7 1.4 0.6 1.2- Soret 0.5 A 0.4 0.8 H COOCH, phytyl bacteriochlorophyll a 0.3 0.6 0.2 0.4 0.1 0.2 01 700 750 800 850 900 300 400 500 600 700 800 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether. 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you exnect this molecule to absorb light in the visible spectrum? Why or why not Absorbance Fluorescence (Arbitrary units)

"Photosynthesis is a process in which light energy is captured and stored by an organism, and the stored energy is used to drive cellular processes," (Blankenship, p. 1). Photosynthesis doesn't just happen in green plants; it can occur in bacteria, as well. It occurs when light- harvesting molecules absorb energy in the form of light and transfer it to a reaction center, where light energy is converted to chemical energy. Most of us know about chlorophyll as the light-harvesting molecule, but there are many forms of chlorophyll found in different organisms. However, they all have similar properties when interacting with light. PHOTOSYNTHETIC PIGMENTS 1.6 C 0.7 1.4 0.6 1.2- Soret 0.5 A 0.4 0.8 H COOCH, phytyl bacteriochlorophyll a 0.3 0.6 0.2 0.4 0.1 0.2 01 700 750 800 850 900 300 400 500 600 700 800 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether. 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you exnect this molecule to absorb light in the visible spectrum? Why or why not Absorbance Fluorescence (Arbitrary units)

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter7: Quantum Theory Of The Atom
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Problem 7.100QP: Ozone in the stratosphere absorbs ultraviolet light of wavelengths shorter than 320 nm, thus...
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"Photosynthesis is a process in which light energy is captured and stored by an organism, and the stored energy is used to drive cellular processes," (Blankenship, p. 1). Photosynthesis doesn't just happen in green plants; it can occur in bacteria, as well. It occurs when light- harvesting molecules absorb energy in the form of light and transfer it to a reaction center, where light energy is converted to chemical energy. Most of us know about chlorophyll as the light-harvesting molecule, but there are many forms of chlorophyll found in different organisms. However, they all have similar properties when interacting with light. PHOTOSYNTHETIC PIGMENTS 1.6 C 0.7 1.4 0.6 1.2- Soret 0.5 A 0.4 0.8 H COOCH, phytyl bacteriochlorophyll a 0.3 0.6 0.2 0.4 0.1 0.2 01 700 750 800 850 900 300 400 500 600 700 800 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether. 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you exnect this molecule to absorb light in the visible spectrum? Why or why not Absorbance Fluorescence (Arbitrary units)
Transcribed Image Text:"Photosynthesis is a process in which light energy is captured and stored by an organism, and the stored energy is used to drive cellular processes," (Blankenship, p. 1). Photosynthesis doesn't just happen in green plants; it can occur in bacteria, as well. It occurs when light- harvesting molecules absorb energy in the form of light and transfer it to a reaction center, where light energy is converted to chemical energy. Most of us know about chlorophyll as the light-harvesting molecule, but there are many forms of chlorophyll found in different organisms. However, they all have similar properties when interacting with light. PHOTOSYNTHETIC PIGMENTS 1.6 C 0.7 1.4 0.6 1.2- Soret 0.5 A 0.4 0.8 H COOCH, phytyl bacteriochlorophyll a 0.3 0.6 0.2 0.4 0.1 0.2 01 700 750 800 850 900 300 400 500 600 700 800 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether. 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you exnect this molecule to absorb light in the visible spectrum? Why or why not Absorbance Fluorescence (Arbitrary units)
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