C454_lect6 - University of Wisconsin
... 2.1 Bacteria vs. Green Plants Plants have two photosystems Photosystem I ...
... 2.1 Bacteria vs. Green Plants Plants have two photosystems Photosystem I ...
PHOTOSYNTHESIS
... ! Different energies per orbital jump The structure of chlorophyll has two major excited states and thus specifically allows absorption of blue and red photons ...
... ! Different energies per orbital jump The structure of chlorophyll has two major excited states and thus specifically allows absorption of blue and red photons ...
You are Star-stuff, But You Can`t Eat Photons
... harnessed by molecular machinery surrounding the photosynthetic center, and helps to create a voltage drop across a special membrane, much like a battery recharging by forming a voltage across its two terminals. Once the electron reaches the end of its journey, it is contained in a molecule called N ...
... harnessed by molecular machinery surrounding the photosynthetic center, and helps to create a voltage drop across a special membrane, much like a battery recharging by forming a voltage across its two terminals. Once the electron reaches the end of its journey, it is contained in a molecule called N ...
1 - contentextra
... are de-energized through an electron transport chain to produce ATP and free hydrogens. Photosystem I then occurs with the formation of NADPH. 12 ATP and NADPH from the light-dependent reaction then pass to the light-independent reaction. The light-independent reaction then occurs within the stroma ...
... are de-energized through an electron transport chain to produce ATP and free hydrogens. Photosystem I then occurs with the formation of NADPH. 12 ATP and NADPH from the light-dependent reaction then pass to the light-independent reaction. The light-independent reaction then occurs within the stroma ...
OverallQuiz2Ch5-8.doc
... c. permit the passage of substances (e.g., ions) between cells through small passageways that directly link the cytoplasm of one cell to the cytoplasm of another cell d. None of these are correct. ...
... c. permit the passage of substances (e.g., ions) between cells through small passageways that directly link the cytoplasm of one cell to the cytoplasm of another cell d. None of these are correct. ...
Photosynthesis: How Do Organisms Get Energy From the Sun?
... Photosystem II uses P680 The electrons from P 680 go into their own electron transport chain where ATP is produced by noncyclic photophosphorylation. The final electron acceptor is P700. But now P680 is oxidized. Where can it get electrons? ...
... Photosystem II uses P680 The electrons from P 680 go into their own electron transport chain where ATP is produced by noncyclic photophosphorylation. The final electron acceptor is P700. But now P680 is oxidized. Where can it get electrons? ...
During the light reactions, there are two possible routes of electron
... Note: ATP synthesis occurs through photophosphorylation (light-dependent formation of ATP by chemiosmosis) The steps: 1. A photon strikes photosystem II and excites an electron of P680 (chlorophyll a of photosystem II). The excited electron is then captured by the primary electron acceptor. This pro ...
... Note: ATP synthesis occurs through photophosphorylation (light-dependent formation of ATP by chemiosmosis) The steps: 1. A photon strikes photosystem II and excites an electron of P680 (chlorophyll a of photosystem II). The excited electron is then captured by the primary electron acceptor. This pro ...
Where does a tree get its mass? - Biology 1510 Biological Principles
... Chlorophylls and other pigments form a lightharvesting complex in photosynthetic membranes ...
... Chlorophylls and other pigments form a lightharvesting complex in photosynthetic membranes ...
Photosynthesis - Weizmann Institute of Science
... In the light-dependent reactions the pigment chlorophyll absorbs light and loses an electron that travels down an electron transport chain producing the high energy molecules NADPH and ATP. The chlorophyll molecule regains its electron by taking one from water, which results in releasing oxygen gas. ...
... In the light-dependent reactions the pigment chlorophyll absorbs light and loses an electron that travels down an electron transport chain producing the high energy molecules NADPH and ATP. The chlorophyll molecule regains its electron by taking one from water, which results in releasing oxygen gas. ...
Ch 6-1 Notes
... 3. The electrons are then transferred along a series of molecules called an electron transport chain ...
... 3. The electrons are then transferred along a series of molecules called an electron transport chain ...
Photosyn online lab
... up at the end of photosynthesis? What happens to the oxygen that was in the water molecule? ...
... up at the end of photosynthesis? What happens to the oxygen that was in the water molecule? ...
BCH 413- PLANT BIOCHEMISTRY (2 UNITS) • ORGANIZATION OF
... 1. Excited electrons from Photosystem I can use an electron transport chain to reduce oxidized P700. This sets up a proton gradient, which can generate ATP. The end result of this looping electron flow, called cyclic phosphorylation, is the generation of ATP and P700. 2. Excited electrons from Phot ...
... 1. Excited electrons from Photosystem I can use an electron transport chain to reduce oxidized P700. This sets up a proton gradient, which can generate ATP. The end result of this looping electron flow, called cyclic phosphorylation, is the generation of ATP and P700. 2. Excited electrons from Phot ...
lecture1
... H2O + light energy ---> ½ O2 + 2H+ + 2 electrons Excited electrons from Photosystem I can use an electron transport chain to reduce oxidized P700. This sets up a proton gradient, which can generate ATP. The end result of this looping electron flow, called cyclic phosphorylation, is the generation of ...
... H2O + light energy ---> ½ O2 + 2H+ + 2 electrons Excited electrons from Photosystem I can use an electron transport chain to reduce oxidized P700. This sets up a proton gradient, which can generate ATP. The end result of this looping electron flow, called cyclic phosphorylation, is the generation of ...
Nutrition
... a) When light is absorbed by chlorophyll, some of its electrons become excited and leap out of the chlorophyll molecule, grabbed by energy receptors. b) The energy of these electrons is used to make ATP from ADP + Pi •2) NADPH2 •a) When light is absorbed by chlorophyll, some of its electrons become ...
... a) When light is absorbed by chlorophyll, some of its electrons become excited and leap out of the chlorophyll molecule, grabbed by energy receptors. b) The energy of these electrons is used to make ATP from ADP + Pi •2) NADPH2 •a) When light is absorbed by chlorophyll, some of its electrons become ...
PHOTOSYNTHESIS NOTES
... energy into the potential chemical energy found between the carbon, hydrogen, and oxygen bonds in sugar (glucose). 1. Photosynthesis uses most of the energy in sunlight except green wavelengths (color that's reflected) 2. The light reactions occur on thylakoid membranes in plants (similar membranes ...
... energy into the potential chemical energy found between the carbon, hydrogen, and oxygen bonds in sugar (glucose). 1. Photosynthesis uses most of the energy in sunlight except green wavelengths (color that's reflected) 2. The light reactions occur on thylakoid membranes in plants (similar membranes ...
SBI 4U photosynthesis 1
... are transferred one by one along a series of eletron-carrying molecules (electron transport system) Each transfer of electrons releases a small amount of energy Energy is used by a b6-f complex to pump hydrogen ions form the stroma across the thylakoid membrane This creates an electrochemical ...
... are transferred one by one along a series of eletron-carrying molecules (electron transport system) Each transfer of electrons releases a small amount of energy Energy is used by a b6-f complex to pump hydrogen ions form the stroma across the thylakoid membrane This creates an electrochemical ...
Bacterial Reaction Centers overall reaction Interesting questions
... UQ(ox) + 2e +H --> UQH2 (red) Em = 60 mV -[cyt c(ox) + e = cyt c(red)] Em= -(+250) ∆G° = -n∆E°= 60 + -2(250) = +440 meV This is fueled by 2 photon of 860 nM (1246.4 eV/860=1.44 eV/photon) efficiency = (440 meV out)/(2.88 meV in)=15% You can also highlight the individual reactions along the pathway r ...
... UQ(ox) + 2e +H --> UQH2 (red) Em = 60 mV -[cyt c(ox) + e = cyt c(red)] Em= -(+250) ∆G° = -n∆E°= 60 + -2(250) = +440 meV This is fueled by 2 photon of 860 nM (1246.4 eV/860=1.44 eV/photon) efficiency = (440 meV out)/(2.88 meV in)=15% You can also highlight the individual reactions along the pathway r ...
Harvesting light
... antenna pigments transferring energy to each reaction centre. Plants found in full sunlight will tend to have antennae with fewer pigments. If the amount of light that is absorbed by plants exceeds their capacity for electron transfer, part of the photosynthetic electron transfer chain can be shut d ...
... antenna pigments transferring energy to each reaction centre. Plants found in full sunlight will tend to have antennae with fewer pigments. If the amount of light that is absorbed by plants exceeds their capacity for electron transfer, part of the photosynthetic electron transfer chain can be shut d ...
Notes Photosynthesis
... F. 2 Different Reactions 1. Light Dependent Reactions Capture light energy for photosynthesis Use sunlight to make ATP and NADPH In thylakoid membranes of chloroplast H2O is a substrate provides electrons and hydrogen ions O2 is a product of this reaction ...
... F. 2 Different Reactions 1. Light Dependent Reactions Capture light energy for photosynthesis Use sunlight to make ATP and NADPH In thylakoid membranes of chloroplast H2O is a substrate provides electrons and hydrogen ions O2 is a product of this reaction ...
File
... • Light-dependent reaction: takes place in the thylakoid space and across the thylakoid membranes. • Light-independent reaction: takes place in the stroma. ...
... • Light-dependent reaction: takes place in the thylakoid space and across the thylakoid membranes. • Light-independent reaction: takes place in the stroma. ...
lecture1
... chlorophyll molecule which results in their excitation to higher energy levels. Thereafter, electrons from the excited chlorophyll molecules are transferred to specialized acceptor molecule and ultimately to NADP+ which is accompanied by ATP formation. Water serves as edonor (reducing agent) purpose ...
... chlorophyll molecule which results in their excitation to higher energy levels. Thereafter, electrons from the excited chlorophyll molecules are transferred to specialized acceptor molecule and ultimately to NADP+ which is accompanied by ATP formation. Water serves as edonor (reducing agent) purpose ...