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The Effects Of Dioxide On Carbon Dioxide Flux Rate

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The presence or absence of light in cyanobacterial species in Inland Sea, Qatar: effects on carbon dioxide flux rate
Maryam Own
BIOG
14th of March 2013

Abstract

The Inland Sea in Qatar contains colonies of microorganisms living in both vertical and horizontal zonation. Cyanobacteria live on the horizontal upper-intertidal layer of the soil.
Cyanobacteria is known for existing for more than 3.5 billion years, and has therefore adapted to live in many conditions (in the cold Arctic or in the desert of Qatar). Since it is known for it is many adaptive characteristics, it is usually a subject for research.
The purpose of this study was to measure the rate of influx of carbon dioxide in the presence of light, and the rate of …show more content…

It can be concluded from the results that respiration took place in both the light and dark reaction because of the physiological of cyanobacteria, where the carbon dioxide uptake mainly takes place at night to reduce the loss of water
INTRODUCTION
The Inland Sea contains multiple microorganisms, where they are present in three horizontal zones, and one vertical zone containing chemotrophic species. First, the horizontal lower-intertidal zone contains distinct sulfur bacteria. Second, the horizontal middle-intertidal zone contains the halophilic bacteria characterized by their reddish color. Last, the upper-intertidal zone contains various species of cyanobacteria that include Nitrogen fixers and filamentous non-nitrogen fixers, which will be the focus of this study. (Mahasneh, Al-Thani, & Brown, 2006) Cyanobacteria are aquatic and photosynthetic bacteria that are known for existing for more than 3.5 billion years (Introduction to the Cyanobacteria) absorbing a wide range of wavelength, as they also contain chlorophyll f, a newly discovered type of chlorophyll that absorbs wavelengths in the red color region ( Chen M, Li Y, Birch D, & Willows RD, 2012). Cyanobacteria can also form heterocyst, which are responsible for fixing nitrogen for plants (Campbell Biology, 2011); this is important when it comes to the evolution of plants. Plants carry photosynthesis and respiration in multiple steps including: Light Reaction (Photosystem II),

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