Biological Oxygen Transport Essay Example | Topics and Well Written Essays - 1500 words

Biological Oxygen Transport - Essay Example The term biological oxygen transport refers to the incorporation of oxygen from the environment into the cell. It covers all the processes right from breathing to the respiration. Such transport process encompasses different levels of organization from organism to the level of sub cellular organelles. The transport of oxygen in various biological systems majorly depends upon the process of diffusion and convection. Generally there are two biological systems: plant and animals. Plants do not have any specialized organ for the transport of oxygen. Roots stem and leaves are major sites involved in uptake and release of oxygen. Oxygen is absorbed for respiration and is released into the atmosphere as a result of photosynthesis. Leaves being exposed to air are the major sites of oxygen uptake. Air mixed oxygen enters the empty spaces in the leaves through the openings called stomata. The entry of oxygen to the intracellular air spaces is followed by the process of rapid diffusion. The interior of the cells have less oxygen concentration as compare to the exterior. So, following the principle of diffusion, oxygen moves from the higher exterior concentration to the lower concentration inside the cell. This transport is accomplished by passing through various cellular-barriers such as cell wall and cell membrane. Oxygen being non polar easily diffuses through these barriers. Oxygen can also be transported through the stem and the roots. The cork of roots and stem contain openings called lenticels, for the transport of oxygen into and out of the plant body. Moreover plants with soft green stems bear stomata for the transport of oxygen. As far as the transport of oxygen within the plants is concerned, experiments have shown that the plant contains non –tortuous gas filled channels between the stem and the root. Apart from the lenticels; the oxygen requirement

Competitive forces and SWOT analysis Essay Example | Topics and Well Written Essays - 2250 words

Competitive forces and SWOT analysis - Essay Example Organic farming and food production found to be less harmful to environment. At the same it offers healthy body and fewer side effects to the regular users. Artificial foods like the fast foods always contain harmful ingredients to the health. Moreover artificial foods always contain excess calories which may be precipitated in the body of the user as fat. Organic farms always use less energy and resources and moreover it helps the ecosystem immensely. The comparatively higher advantage of organic farming and the consumption of organic foods forced many countries to encourage the farming and usage of organic foods at present. Founded in 1980, in Texas as a small supermarket, Whole Foods Market is currently world’s largest retail chain in natural and organic foods. John Mackay is the CEO and co-founder of Whole Foods Market. The company has recorded $ 6.6 billion sales in 2007 and had around 276 stores in total in countries like US, UK and Canada. It recorded an annual growth rate of 20% from 2000 onwards has set a target of 400 stores and $ 12 billion sale by 2010 (Thompson, 2008, p.c2). Whole Foods Market is responsible for the popularity of organic foods not only in America but even in other countries as well. Whole Foods Market aims to catch the number one spot not only in organic food industry but even in general food industry where the Whole Foods Market stores operate. People are more aware of the consequences of artificial foods at present which helped organic foods to grow immensely for the last two decades. The rapid pace of life activities and high levels of diversified commitments forced the public to rely on fast in order to save time. Moreover, fast foods were tastier than the organic foods which helped the fast food industry to grow immensely. But along with the fast food industry, the health problems also began to grow heavily. Dawn Crystal (2010) has mentioned that the major