"Photosystem" Example Sentences
1. The photosystem in the chloroplasts of green plants captures light energy to drive the process of photosynthesis.
2. The photosystem II complex contains chlorophyll and other pigments that absorb photons of light.
3. Photosynthetic bacteria have only one type of photosystem, whereas plants have two distinct photosystems, PSI and PSII.
4. The dark reactions of photosynthesis rely on the energy captured by the photosystems during the light reactions.
5. The photosystem of cyanobacteria is structurally and functionally similar to that of plants and algae.
6. The reaction center of photosystem I contains a specialized pair of chlorophyll molecules called P700.
7. The light-harvesting complex of photosystem II contains several pigments, including chlorophyll a, chlorophyll b, and carotenoids.
8. The photosystem in purple bacteria is located in the cytoplasmic membrane rather than in specialized organelles like chloroplasts.
9. The oxygen-evolving complex of photosystem II uses water molecules to produce molecular oxygen as a byproduct of photosynthesis.
10. The antenna complex of photosystem I captures photons of light and transfers the energy to the reaction center.
11. The photosystem of green sulfur bacteria is similar to that of purple bacteria, but it uses reduced sulfur compounds instead of water as a source of electrons.
12. The electron transport chain between photosystem II and photosystem I generates a proton motive force that drives ATP synthesis.
13. The structure of the photosystem II complex has been elucidated by X-ray crystallography and cryo-electron microscopy.
14. The photosystem of heliobacteria is unique among photosynthetic organisms in that it uses a special type of flavodoxin as an electron carrier.
15. The photosystem II inhibitor herbicide DCMU blocks electron transfer from the quinone acceptor plastoquinone to the cytochrome b6f complex.
16. The electron transport chain between photosystem I and the NADP+ reductase reduces NADP+ to NADPH, which is used in the dark reactions of photosynthesis.
17. The photosystem in red algae is located in specialized organelles called chloroplasts, but these are structurally distinct from chloroplasts in green plants.
18. The photosystem of green non-sulfur bacteria contains an accessory pigment called bacteriochlorophyll that absorbs light at longer wavelengths than chlorophyll.
19. The photosystem of diatoms is located in flattened vesicles called thylakoids, which are stacked into grana.
20. The photosystem of brown algae is similar to that of red algae, but it has an additional pigment called fucoxanthin that gives it a brownish color.
21. The photosynthesis of some bacteria, such as Rhodobacter sphaeroides, can switch between aerobic and anaerobic modes depending on the availability of oxygen and other electron acceptors.
22. The photosystem of photosynthetic purple bacteria can be studied by a technique called fluorescence spectroscopy, which measures the emission of light by excited pigments.
23. The photosynthetic apparatus of plants and algae is highly dynamic and can adjust its composition and orientation in response to changing light conditions.
24. The photosystem of Chlorobium tepidum, a green sulfur bacterium that lives in hot springs, is adapted to function at high temperatures.
25. The photosynthesis of some bacteria, such as Chloroflexus aurantiacus, can use light energy to generate ATP without producing oxygen or organic compounds.
26. The photosystem I inhibitor herbicide atrazine blocks electron transfer from the iron-sulfur center Fx to ferredoxin in the stroma of chloroplasts.
27. The photosystem II repair cycle involves the assembly of new D1 and D2 proteins to replace damaged ones that have been degraded by proteases.
28. The photosystem of cyanobacteria can use alternative electron acceptors such as protons, carbon dioxide, or nitrogenase to perform additional metabolic functions.
29. The photosystem of photosynthetic eukaryotes is thought to have evolved from endosymbiotic cyanobacteria that were engulfed by early eukaryotic cells.
30. The photosynthesis of some prokaryotes, such as green non-sulfur bacteria, can produce biohydrogen gas as a byproduct, which has potential applications as a renewable fuel.
Common Phases
1.
Photosystem I
2.
Photosystem II
3. Light-harvesting complex
4. Electron transport chain
5. Chlorophyll pigments
6. Non-cyclic photophosphorylation
7. ATP synthesis
8. NADPH production
9. Reaction center
10. Photosynthetic electron transfer
11. Absorption spectrum
12. Excitation energy transfer
13. P700 chlorophyll
14. P680 chlorophyll
15. Proton motive force
16. Carotenoid pigments
17. Antenna complex
18. Redox reactions
19. Oxygen evolution
20. Photochemistry.