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Dictionary » S » Sheath Sheathsheath The lower part of leaf enveloping stem or culm. A secreted, tubular structure formed around a chain of cells or around a bundle of filaments, cells within a sheath may or may not subsequently separate from the sheath. a layer of outer membrane covering the bacterial flagella. ![]()
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Results from our forumPhotosynthesis questionin C4 photosynthesis, does carbon fixation take place in the mesophyll and then transferred to the bundle-sheath cells where CO2 is released for entry into the Calvin Cycle? Or have I got this all wrong? Thanks
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Photosynthesis Trivia... True/False Section 1. The wavelengths of light most effective in photosynthesis are those in the green part of the visible spectrum. 2. Bundle sheath cells are associated chiefly with C-3 photosynthesis and contain many chloroplasts. 3. CAM metabolism is chiefly associated with plants in cool, ...
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C4 and photorespiration... to give phosphate and oxaloacetate which is then reduced to malate in the mesophyll cell. then the malate goes to the bundle sheath cell, where it is "broken down" back to CO2. the CO2 can then be fixed by Rubisco with minimum photorespiration, because there is not ...
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Myelin SheathNo. The myelin sheath doesn't let disperse for electric impulses. And the more myelin (the larger diameter of neuron) the faster electric impulses are conducted.
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Myelin SheathHi there, We are currently studying about nerves/neurons. I heard that messages can travel along a neuron much quicker if we are warming up/exercising ... Does anyone know why this happens and how this is related to myelin sheaths? My only guess is that because the fatty layer of myelin becomes more...
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