Question

how energy is trapped and used

Answer 1

• Photosynthesis is the process of fixing carbon dioxide from the atmosphere by green plants (chlorophyll) in the presence of solar radiation, with the removal of oxygen and formation of organic compounds vary widely. (including sugars). Sunlight has a more important role in our nutrition than we've had expected. All food and all the fossil fuels we use are products of photosynthesis, a process that converts solar light energy in chemical forms of energy that can be used in biological systems. Photosynthesis can be made by different bodies, ranging from plants to bacteria. The most familiar form of photosynthesis is carried out by higher plants and algae, as well as cyanobacteria and bacteria related to them, which are responsible for much of the photosynthesis in the oceans.All these bodies, transform carbon dioxide into organic material by reducing this gas to carbohydrates, using a series of complex transformations.Electrons for reducing these reactions, coming from the water, which then decompose into oxygen and protons. The energy for this process is provided by the light, being absorbed by pigments. (generally chlorophyll and carotenoids). Chlorophyll absorbs red and blue light, carotenoids absorb blue green light, while green and yellow light has no effect on the absorption of photosynthetic pigments in plants. Therefore, light with these colors is reflected or is allowed to pass through the leaves, because of this phenomenon plants being green.

• Almost all the oxygen in the atmosphere has been generated by photosynthesis. Of course all breathing organisms use the oxygen and remove carbon dioxide, photosynthesis and respiration are crossing , each product depending on the other. Without photosynthesis, the air in Earth's atmosphere should be consumed within a few thousand years.