Electrons in Photosynthesis
نویسندگان
چکیده
منابع مشابه
Path of electrons in photosynthesis.
Electrons, from the oxidation of water, inside the grana disks (thylakoids) are transferred across the membrane to the outside, to the Calvin cycle or the Hill oxidant. The span in redox level may be 2.3 V. Part of the system II chlorophyll is on the inside of the membrane and part on the outside. An electron trap is embedded in the membrane. Alternately, an excited chlorophyll on the inside gi...
متن کاملPhotosynthesis of ATP—Electrons, Proton Pumps, Rotors, and Poise
Light-driven electron transport is coupled to ATP synthesis in chloroplasts. While the nature of the coupling and the structures of key components are now known, there has long been disagreement over pathways of electron transport. Recent results now put an old idea back on the agenda-cyclic electron transport around photosystem I.
متن کاملPhotosynthesis
Photosynthesis sustains virtually all life on planet Earth providing the oxygen we breathe and the food we eat; it forms the basis of global food chains and meets the majority of humankind's current energy needs through fossilized photosynthetic fuels. The process of photosynthesis in plants is based on two reactions that are carried out by separate parts of the chloroplast. The light reactions...
متن کاملElectrons in one dimension
In this article, we present a summary of the current status of the study of the transport of electrons confined to one dimension in very low disorder GaAs-AlGaAs heterostructures. By means of suitably located gates and application of a voltage to 'electrostatically squeeze' the electronic wave functions, it is possible to produce a controllable size quantization and a transition from two-dimens...
متن کاملElectrons in a Shell
The spatial distribution of electrons inside an empty spherical shell with an impenetrable wall is considered. It is shown that with a large number N of non-relativistic electrons, the electrons are concentrated near the wall in a layer of thickness 5 / 3 5 / 2 5 / 1 ~ B a a N ⋅ ⋅ δ − , where a is the radius of the shell, and aB is the Bohr radius. In this brief note, we consider the spatial di...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1922
ISSN: 0006-8071
DOI: 10.1086/333107