However, oxygen is discharged. Meanwhile, sunlight is a vital pathway to transfer chemical energy, saving the glucose molecule, so that respiration, C_6 H_12 O_6, happens during photosynthesis. Photosynthesis takes place chlorophyll, which is the main pigment in photosynthetic organisms. Its function is to absorb useful wavelengths of light. From chlorophyll, red and blue lights, in fact, are the most assimilative colors, whereas green light is exuded by chlorophyll.
Introduction Photosynthesis is the process whereby chlorophyll containing cells in green plants convert incident light to chemical energy and synthesise organic compounds from inorganic compounds (Great Illustrated Dictionary, 1984). It could also be presented by this equation (6CO2 + 6H2O C6H12O6 + 6O2), all in the presence of sunlight (Mader, 2010). The word photosynthesis means “putting together with light” (Ashley, 2000). In order for plants to photosynthesis, a source of light energy is needed. This energy is normally obtained from the sun.
However higher intensity have a better effect on the rate of photosynthesis, as it manages to hit not only the top part of the plant but also the bottom leaves, maximizing the effects of photosynthesis to the plants potential. Farmers use the power of grow lights to control the photoperiod during the seasons where sunlight isn’t as strong and photoperiod is lower and to increase the rate of photosynthesis. There are different kinds of grow light and each of them has different function or a different effectiveness: • Incandescent; The incandescent light bulb is used to control photoperiod mostly. This because the majority of energy form released from the light bulbs is heat rather than light, and is therefore an inefficient light source. Also because this light bulb releases mostly heat it must be placed at a correct distance from the plant, otherwise it might cause the plant to burn.
Introduction Are plants considered to be cooler than humans? Well plants have developed a smarter, cleaner and cheaper way to produce energy. This method is known as photosynthesis which simply converts sunlight, carbon dioxide and water into usable energy (carbohydrates) and oxygen (which is released). Although humans have a variety of energy sources, such as fossil fuels and wind turbines, most of these methods are expensive and harmful. For instance, the burning of fossil fuels increased the amount of carbon dioxide in the atmosphere which contributed to global warming.
The process occurs in the stroma and it produces G3P, which is used for carbohydrates such as glucose. Light-dependent reactions, on the other hand, rely on the presence of light energy. The process occurs in the thylakoid and it produces ATP, NADPH, and oxygen as a by-product. Chlorophyll contains a porphyrin ring that allows the free movement of electrons to easily gain or lose them. It is the most abundant pigment for photosynthesis as it absorbs light from most of the spectrum and transfers the energy to the reaction center.
On their part, fossil fuels, such as coil, oil and natural gas are running out and in order for them to be restored, it would take a few thousands of years. These fossil fuel sources are finite and will someday be depleted. Another difference between fossil fuels and renewable energies is that the latter are clean sources of energy that have a low environmental impact. Fossil fuel energies on the other hand, contain high percentage of carbon and hydrocarbons that rise to the atmosphere and cause air pollution and global warming. It is said that even though there is no single solution to reverse or arrest global warming, the production of energy through renewable sources, such as water, emissions can be reduced and the concentration level of atmospheric CO2 stabilized.
According to the Intergovernmental Panel on climate change in (2001), the burning of fossil fuels and other human and natural activities has released enormous amounts of heat-trapping gases into the atmosphere. This mean, these emissions have caused the Earth's surface temperature to rise, and the oceans absorb about 80 percent of this additional heat. However, some scientists opposed the statement that human activities are reason behind the observable fact of sea level rise, According to William M. Gray, “natural variations are the cause of periodic global temperature increases and human kind has nothing to do with the temperature changed”. That shows, the changes in natural phenomena such as solar radiation produced most of warming and had a small cooling effect afterward. Despite that, Subsidence in Venice is caused by both natural and manmade factors.
Whereas, when the light intensity is great, the rate of photosynthesis will be high. Introduction Photosynthesis is the process of converting energy from sunlight to chemical energy known as ATP which is necessary for all living organisms. The photosynthetic process uses raw materials such as water and carbon dioxide and releases oxygen and sugar as a byproduct (Mader, S. 2010). The chemical equation is:
However, David Evans has concluded after six years of research that greenhouse gases would not affect the world’s climate in the catastrophic ways that media might portray it. One example of a greenhouse gas would be mathane, according to Energy Weekly News, methane warms the planet 86 times what carbon dioxide does over the course of twenty years. A chemical that is more potent than carbon dioxide is troublesome because there is already such an abundance of carbon dioxide that the governments of the world have resorted to taxing large companies as an attempt to slow production on it or at least give them a motive to. Methane is produced by cow farts and through the extraction of oil and natural gas, the production of which was regulated by the Obama Administration in 2016 according to Harder with the Wall Street Journal (Online).
BIO-HYDROGEN Hydrogen gas produced from the photosynthetic organisms and from wastes by microbial fermentation is called Bio-Hydrogen. Green plants, algae and cyanobacteria are capable of producing hydrogen during light reactions of photosynthesis. A. Photoproduction of Hydrogen In photosynthetic microbes, hydrogen production takes place in the electron transport chain. Ferridoxin accepts electrons from the electron transport system and gives to the hydrogenase enzyme, green algae, Ascophyllum nodosum which reduces H+ ions into H2. This type of H2 production occurs in Chlamydomonas, Chlorella and red algae such as Ceramium rubrum, Chondrus crispus, Porphyra, Corallina etc.