Photosynthesis is a biochemical process in the formation of carbohydrate food substances made by plants, especially plants passport application that contain chlorophyll leaves or chlorophyll. passport application In addition to chlorophyll passport application of plants, living passport application beings other non-chlorophyll are photosynthetic algae and some bacteria. These organisms photosynthesize using nutrients, passport application carbon dioxide, and water and sunlight energy assistance.
Fotoautotrof photosynthetic passport application organisms called because they can make their own food. In plants, algae, and cyanobacteria, photosynthesis performed passport application by utilizing carbon dioxide and water and produce oxygen waste products. Photosynthesis is vital for all aerobic life on Earth because in addition passport application to maintaining normal levels of oxygen in the atmosphere, photosynthesis is also the source of energy for almost all life on Earth, passport application either directly (through primary production) or indirectly (as the main source of energy in their food ), except on kemoautotrof organisms that live on the rocks or in hydrothermal vents in the deep sea. The rate of absorption of energy by photosynthesis is very high, which is about 100 terawatt, or roughly six times larger than the energy consumption of human civilization. In addition to energy, photosynthesis is also the source of carbon for all organic compounds in the body of an organism. Photosynthesis around 100-115 petagram change carbon into biomass per year.
Although photosynthesis can take place in a variety of ways in a variety of species, some characteristics are always the same. For example, the process always begins with light energy absorbed by chlorophyll proteins passport application called photosynthetic reaction centers. In plants, these proteins are stored in organelles called chloroplasts, while in bacteria, these proteins are stored in the plasma membrane. Most of the light energy passport application gathered by chlorophylls is stored in the form of adenosine triphosphate (ATP). The rest of the energy is used to separate electrons from a substance such as water. These electrons are used in the reaction that converts karbondioksia into organic compounds. In plants, algae, and cyanobacteria, this is done in a series of reactions called the Calvin cycle, but different sequence passport application of reactions are found in some bacteria, such as reverse Krebs cycle in Chlorobium. Many photosynthetic organisms have adaptations that concentrate or store carbon dioxide. This helps reduce a wasteful process called photorespiration that can spend most of the sugar produced during photosynthesis.
11. DNA plastids
The process of photosynthesis passport application can not take place in every cell, but only in cells that contain photosynthetic pigments. Cells that do not have photosynthetic pigments is not able to perform photosynthesis. In January Ingenhousz experiment, it is known that light intensity affects the rate of photosynthesis passport application in this tumbuhan.Hal may occur due to differences in the energy produced by each of the light spectrum. In addition to the difference in the energy, another factor passport application that made the difference is the ability of leaves to absorb a variety of different light spectra such. Differences in the ability of leaves passport application to absorb the various spectrum of light caused by the differences in the type of pigment contained in the leaf tissue.
Contained in the leaf mesophyll consisting of spongy tissue and tissue fence. In both these networks, there is a green pigment-containing chloroplasts klorofil.Pigmen this is one of the photosynthetic pigment that plays an important role in absorbing solar energy.
Of all the solar radiation that is emitted, only certain wavelengths are used plants for photosynthesis, ie wavelengths passport application in the range of visible light (380-700 nm). [18] Visible light consists of red light (610-700 nm), yellow green (510-600 nm), blue (410-500 nm), and violet (<400 nm). [19] Each of these different passport application kinds of light effects on photosynthesis. [19] This is related to the nature of the pigments capture light work in photosynthesis. Pigment contained in grana membrane absorbs light having a certain wavelength. Different pigments absorb light at different wavelengths. Chloroplasts contain several pigments. For example, chlorophyll a absorbs mainly blue-violet light and red, while chlorophyll b absorbs blue light and reflective orange and yellow-green. Chlorophyll a direct role in the light reactions, whereas chlorophyll b is not directly play a role in the absorption of light energy terang.Proses reaction causing the release of high-energy electrons from chlorophyll a, which will then be distributed and captured by an electron acceptor. This process is the beginning of a long series of reactions of photosynthesis.
Chloroplasts found in all green parts of plants,
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