Photoinhibition of photosynthesis induced by visible light.

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Photosynthesis consists of two connected sets of reactions....

Light influences the response to photosynthesis, the rate of calcification and also plays a role in the reproductive cycle.

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The same cycle of the light reaction then takes place.

6CO + 6H O ® C H O + 12O (in the presence of light energy and chlorophyll) Aim- The aim of the experiment is to determine what effect light intensity has upon the rate of photosynthesis of Canadian Pondweed (Elodea)....

Photosynthesis need light to work, so light therefore should speed up the rate of photosynthesis.

This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...

The Effect of Light on Photosynthesis :: Papers - …

Photosynthesis requires the following resources; Carbon Dioxide, Water and light.

Johan Strümpfer, Melih Sener, and Klaus Schulten. How quantum coherence assists photosynthetic light harvesting. Journal of Physical Chemistry Letters, 3:536-542, 2012.

Thorsten Ritz, Ana Damjanović, Klaus Schulten, Jian-Ping Zhang, and Yasushi Koyama. Efficient light harvesting through carotenoids. Photosynthesis Research, 66:125-144, 2000.

Photosynthesis: Overview of the light-dependent reactions

Dong Xu and Klaus Schulten. Coupling of protein motion to electron transfer in a photosynthetic reaction center: Investigating the low temperature behaviour in the framework of the spin-boson model. Chemical Physics, 182:91-117, 1994.

Herbert Treutlein, Klaus Schulten, Christoph Niedermeier, J. Deisenhofer, H. Michel, and D. Devault. Electrostatic control of electron transfer in the photosynthetic reaction center of Rhodopseudomonas viridis. In J. Breton and A. Verméglio, editors, The Photosynthetic Bacterial Reaction Center: Structure and Dynamics, volume 149 of NATO Science Series A: Life Sciences, pp. 369-377. Plenum, New York, 1988.

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  • The quantity and quality of light ..

    The two aspects of light that we are often concerned with are the quantity of light and the spectral quality of light.

  • Section 16.3 Photosynthetic Stages and Light-Absorbing ..

    Hypothesis: The rate of photosynthesis in the water plant hydrilla will change as the rate of carbon dioxide changes.

  • Effect of light intensity on photosynthesis

    Photosynthesis mainly takes place in the Palisade Mesophyll cells, which are situated near the top of the leaf....

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The quality of the light wavelength ..

Johann Deisenhofer and Hartmut Michel. The photosynthetic reaction centre from the purple bacterium Rhodopseudomonas viridis. Science, 245:1463-1473, 1989.

The Process of Photosynthesis in Plants: An Overview

Johann Deisenhofer and Hartmut Michel. The photosynthetic reaction centre from the purple bacterium Rhodopseudomonas viridis (Nobel Lecture). Angew. Chem. Int. Engl., 28:829-847, 1989.

Basic products of photosynthesis - Encyclopedia …

Hans-Joachim Werner, Klaus Schulten, and Albert Weller. Electron transfer and spin exchange contributing to the magnetic field dependence of the primary photochemical reaction of bacterial photosynthesis. Biochimica et Biophysica Acta, 502:255-268, 1978.

Light, photosynthesis, quality and yield in blueberries.

This is no Hollywood creation, however, with its myriad special effects and artists' renditions. Schulten had control of all 100 million atoms that make up the chromatophore, and each interlocking process illustrated is based on sound research conducted over decades by many scientists, including various members of Schulten's group. The movie starts with light harvesting and quantum coherence, proceeds to electron and proton transfer, and ends up with synthesis of ATP. The proteins critical to this array of processes are the reaction center, LH1 and LH2, the bc1 complex, and finally ATP synthase. Within the context of the chromatophore, the movie accounts for all the interacting parts for an entire, multi-faceted description of a full biological machine. What is illustrated is the interdigitation of processes going on, not just one process or one protein, as is often how scientists have to study living systems.

Effect of colour of light on the rate of photosynthesis

After forty-plus years of studying photosynthesis, Klaus Schulten has pieced together the intervening processes that occur between the absorption of sunlight and the generation of ATP. He feels he has finally garnered an understanding to suit himself, about the full mechanism of the photosynthetic membrane. With solution of the entire structure of the chromatophore at hand, Schulten was at a point in his career where he could illustrate the function of this autonomous machine, which harbors many processes that interlock together to make photosynthesis work. He had also demystified the role of each type of protein that comprises the chromatophore. At this juncture in time (2014), he harkened back to his long-cherished goal of explaining a whole cell, and realized he could by now reach this goal, by at least explicating a living system at the organelle level. He could show the function of chromatophore and how its proteins worked together like a Swiss watch to convert sunlight into ATP. But what he wanted to do scientifically he could only do with a movie.

The Effect of light Intensity on Photosynthesis Of Elodea ..

Schulten is proud of his group's efforts on coherence, which started in the late 1990s and continues on today with the work of Johan Strümpfer. But this current work on coherence draws from some 30-plus years of Schulten and collaborators laboring to understand the story of how nature has fashioned photosynthesis to make it an efficient and elegant process. And Schulten's objective still remains to uncover the many steps of photosynthesis and clearly explain the findings to the research community. “There was a lot of work done, methodological developments and theory and so on, but the goal was to explain how nature effectively harvests sunlight,” summarizes Schulten on his last 35 years. “It's maybe still not complete, but I figured it out to a large degree.” And without a doubt, for what remains to be done, Schulten's group will be at the forefront in the years to come.

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