Español
fotosíntesis.
(De foto- y síntesis).
1. f. Proceso metabólico específico de ciertas células de los organismos autótrofos, por el que se sintetizan sustancias orgánicas a partir de otras inorgánicas, utilizando la energía luminosa.
Fuente: Diccionario de la Real Academia Española
English
The process of constructive metabolism by which carbohydrates are formed from water vapor and the carbon dioxide of the air in the chlorophyll-containing tissues of plants exposed to the action of light. It was formerly called {assimilation}, but this is now commonly used as in animal physiology. The details of the process are not yet clearly known. Baeyer s theory is that the carbon dioxide is reduced to carbon monoxide, which, uniting with the hydrogen of the water in the cell, produces formaldehyde, the latter forming various sugars through polymerization. Vines suggests that the carbohydrates are secretion products of the chloroplasts, derived from decomposition of previously formed proteids. The food substances are usually quickly translocated, those that accumulate being changed to starch, which appears in the cells almost simultaneously with the sugars. The chloroplasts perform photosynthesis only in light and within a certain range of temperature, varying according to climate. This is the only way in which a plant is able to organize carbohydrates. All plants without a chlorophyll apparatus, as the fungi, must be parasitic or saprophytic. -- {Pho`to*syn*thet"ic}, a. -- {Pho`to*syn*thet"ic*al*ly}, adv. [Webster 1913 Suppl.]
Source: The Collaborative International Dictionary of English
Páginas en idoneos.com
Oxigenación del agua: proceso natural y artificial
Cómo llega el oxígeno al agua, factores que alteran el nivel de oxígeno, aireación artificial y su funcionamiento.
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