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Carbon dioxide in photosynthesis

Researchers around the world are developing artificial photosynthesis to turn carbon dioxide and sunlight into liquid fuel

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Carbon dioxide in photosynthesis

Human contributions.
While a certain amount of the carbon dioxide in our atmosphere is created through natural processes like respiration, wildfires, and volcanic activity, human activity is a the largest source of global CO2 emissions. This is primarily because so much of our modern life requires power generated by burning fossil fuels, such as coal used for electricity and oil used for transportation. Fossil fuels are created when ancient plant and animal material is buried, transformed, and preserved in sediments over a long period of time (millions of years). As these fuels are recovered and burned, the carbon within them is released, combining with the oxygen in the air to create carbon dioxide. Below are some of the main sources of human-generated carbon dioxide.

What is the source of the carbon dioxide that is used in photosynthesis?a

Sunlight provides energy in the form ofelectromagnetic radiation. Sunlight is actuallymade up of photons, which are very small particlesthat carry electromagnetic force. In the firststep of photosynthesis, the plants capture aphoton and harness its energy in order to startphotosynthesis. During photosynthesis, the plantstake carbon dioxide (which is present throughoutthe air) and water (which is also in the air anddirt) and turn it into sugar, among othercompounds. Plants also produce oxygen duringphotosynthesis. (This is a lucky process for usbecause we produce carbon dioxide and breathe inoxygen -- without plants, we'd be in a lot oftrouble!)

During the photosynthesis process, the carbon dioxide is ..

There could be all the carbon dioxide in the world available to the plant but photosynthesis cannot go faster.

Plants make their own food by photosynthesis. Carbon dioxide and water react together in the presence of light and chlorophyll to make glucose and oxygen. The glucose is converted into starch, fats and oils for storage. It is used to make cellulose for cell walls, and proteins for growth and repair. It is also used by the plant to release energy by respiration.

Manufacturing
In addition to traditional manufacturing, there are a number or specialized industrial production processes and product uses that result in the release of CO2. Mineral production, metal refining and the development of petroleum-based products like plastic all result in carbon dioxide emissions. Carbon dioxide is also released in the production of the cement used in concrete and mortar incorporated heavily in most construction projects.

How do plants use carbon dioxide in photosynthesis? - …

This allows for safe flue gas introduction into the greenhouse. The flue gases are extracted where the boiler connects to the stack. These units are designed to reduce the temperature and moisture impact on the greenhouse environment, and have monitoring systems that safe guard against flue gas introduction when the carbon monoxide (CO) level is higher than a set level (usually 6–10 ppm). The system is designed with a small capacity ventilator with low suction resulting in a fixed volume of the flue gases. A second ventilator is used to mix the flue gases with the greenhouse air and then the mixture is introduced throughout the greenhouse. This system provides the flexibility to introduce the CO2 low within the crop and allowing it to rise through the crop before exiting the vents. The delivery system must be designed to ensure even distribution throughout the greenhouse (). In order to increase efficiency and to provide CO2 during the day when there is no requirement for heat, a hot water heating system equipped with an insulated hot water storage tank is used. The size of the tank may vary from 30–130 m3/ha of greenhouse. The heat generated by the boiler during the day is stored in the tank and is used at night as required (). Summer CO2 supplementation using flue gas can be achieved as long as the stored heat is used during the night. In some cases during the summer months the stored heat is not required as the outside night temperature remains higher than 22°C. In this situation CO2 application is limited.

Industrial production
Pretty much everything we eat, use or consume involves factory production at some point. This requires the extensive use of fossil fuels in plants around the globe. At one point, much of this activity was focused in the United States. But as China and other countries increase their industrial output, much of the carbon dioxide released through industrial production has shifted to Asia.

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  • Carbon dioxide is needed for photosynthesis - …

    Carbon dioxide is used in enhanced oil recovery where it is injected into or adjacent to producing oil wells, ..

  • Plants get carbon dioxide from the air through their leaves

    Experiments to show the factors required in photosynthesis (2) - light and carbon dioxide

  • 16/01/2018 · Plants use carbon dioxide to produce food

    Photosynthesis is a reaction in the LEAVES of a plant, where water and carbon dioxide become glucose ..

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Photosynthesis and carbon fixation

Photosynthesis takes place in two stages, thefirst of which captures the energy, and the secondwhich makes sugars. The first one requires water,because the plant uses the hydrogen atoms in waterto collect the energy. The second requires both:sugar contains carbon, oxygen, and hydrogen, ofwhich the first two come from carbon dioxide andthe last, comes from water. The excess oxygen isreleased as oxygen gas.

BBC - GCSE Bitesize: Photosynthesis and respiration

Ambient CO2 level in outside air is about 340 ppm by volume. All plants grow well at this level but as CO2 levels are raised by 1,000 ppm photosynthesis increases proportionately resulting in more sugars and carbohydrates available for plant growth. Any actively growing crop in a tightly clad greenhouse with little or no ventilation can readily reduce the CO2 level during the day to as low as 200 ppm. The decrease in photosynthesis when CO2 level drops from 340 ppm to 200 ppm is similar to the increase when the CO2 levels are raised from 340 to about 1,300 ppm (). As a rule of thumb, a drop in carbon dioxide levels below ambient has a stronger effect than supplementation above ambient.

which is similar to glucose and is used by ..

Today, most growers monitor and control the greenhouse environment with sensors linked to a central computer to allow integration of the different environmental factors. A carbon dioxide controller, usually an infrared gas analyser (IRGA) is used to monitor and maintain the minimum and maximum CO2 level in the greenhouse. Usually a single IRGA is used per operation. Multiple readings within individual compartments or from different zones can be obtained by using a scanner or a multiplexer. The IRGA unit can be stand-alone or, as in most cases, connected to the environment control computer. In the latter case the environment control computer is used to control the CO2 level, through integration with light levels, stage of ventilation, and wind speed. Infra red gas analysers require routine calibration to insure accurate measurement of the CO2 levels.

be used for photosynthesis by ..

Sunlight provides energy in the form ofelectromagnetic radiation. Sunlight is actuallymade up of photons, which are very small particlesthat carry electromagnetic force. In the firststep of photosynthesis, the plants capture aphoton and harness its energy in order to startphotosynthesis. During photosynthesis, the plantstake carbon dioxide (which is present throughoutthe air) and water (which is also in the air anddirt) and turn it into sugar, among othercompounds. Plants also produce oxygen duringphotosynthesis. (This is a lucky process for usbecause we produce carbon dioxide and breathe inoxygen -- without plants, we'd be in a lot oftrouble!)Amazingly, some animals have beenfound that also do photosynthesis. I recentlywrote an article on such an animal -- here is thelink if you're interested (it also talks moreabout photosynthesis):

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