| 词汇 | 叶绿素 |
| 释义 | 叶绿素 Chlorophyll, the photosynthetic pigment that gives leaves their characteristic green color, is widely known for its ability to absorb certain wavelengths of light. In addition, it contains large quantities of chlorophyll which function for the growth of brain. Individual phytoplankton are tiny, but when they bloom by the billions, the high concentrations of chlorophyll and other light-catching pigments change the way the surface reflects light. But Lake Superior's chlorophyll levels— a measure of the presence of phytoplankton— have been falling. As summer turns to autumn, the photosynthetic process slows down as the days get both shorter and colder, which in turn leads to less chlorophyll production and the green fading to yellow. The chlorophyll fluorescence method offers a more direct view into the photosynthetic machinery of plants and might provide an opportunity to detect stress sooner. Also like terrestrial plants, phytoplankton contain the pigment chlorophyll, which gives them their greenish color. Like land plants, phytoplankton have chlorophyll to capture sunlight, and they use photosynthesis to turn it into chemical energy. Scientists use these changes in ocean color to estimate chlorophyll concentration and the biomass of phytoplankton in the ocean. Phytoplankton, on the other hand, contain chlorophyll for photosynthesis, which gives them a green color. In every leaf, chlorophyll molecules are seizing the day for photosynthesis. As a result, the green chlorophyll is slowly leached away, revealing the yellow and orange hues seen in some tree species come autumn. As a result, the green chlorophyll is slowly leached away, revealing the yellow and orange hues seen in some tree species come autumn. Red leaves are another story. And in the Proceedings of the National Academy of Sciences, they report using the device to detect the signature reflection that comes from the chlorophyll in plant leaves. The secret ingredient is chlorophyll, which aids in overall digestive function. The researchers used a radioactive tracer to be sure that the slugs are actually producing the chlorophyll themselves, as opposed to just stealing the ready-made pigment from algae. The researchers looked at measurements of ocean transparency and tested for concentrations of chlorophyll, which gives large numbers of phytoplankton a distinctive green sheen. During photosynthesis, leaves have to produce chlorophyll to capture the energy from the sun, and it is this chlorophyll that gives them their green colour. That means that organisms that have this chlorophyll inside can extend their photosynthetic range for maximum use of solar energy. These microscopic planktonic organisms carry out the same chlorophyll driven photosynthesis process as green plants on land. This could be estimated at1000 litres of hydrogen for330 grams of chlorophyll per day whereas for example colza produces roughly only1000 litres of oil per hectare. . . When there's a lot of chlorophyll around, they see a lot of green light. Photosynthesis shuts down, halting the production of chlorophyll in leaves. Phytoplankton are most abundant yellow, high chlorophyll in high latitudes and in upwelling zones along the equator and near coastlines. |
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