Plant tissue culture is a widely used procedure in plant biology in which organism is planted from the explants of the living plants in a nutrient medium under aseptic conditions. There are both advantages and disadvantages of plant tissue culture. Advantages: 1. To produce many copies of the same plants then which may be used to produce plants with better flowers‚ odors‚ fruits or any other properties of the plants that are beneficial to the human beings. 2. To produce plants anytime we want
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238‚ there are two factors (explanatory variables): aspirin (values are “taking it” or “not taking it”) and beta carotene (values again are “taking it” or “not taking it”)‚ and this divides the subjects into four groups corresponding to the four cells of Figure 3.1 (p. 239). Had the response variable for this study been quantitative—like systolic blood pressure level—rather than categorical‚ it would have been an appropriate scenario in which to apply (2-way) ANOVA. 1.2 Hypotheses of ANOVA These
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INTRODUCTION An important aspect of any biotechnological processes is the culture of animal cells in artificial media. These animal cells in culture are used in recombinant DNA technology‚ genetic manipulations and in a variety of industrial processes. Now-a -days it has become possible to use the cell and tissue culture in the areas of research which have a potential for economic value and commercialization. The animal cell cultures are being extensively used in production of vaccines‚ monoclonal antibodies
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Advantages and Disadvantages of Cell / Mobile Phones Brief History: Joseph Henry Enenbach will be remembered as a pioneer in mobile telephone technology that led to the creation of the cellular telephone. He died on 26th February‚ 1994 at the age of 70. In Pakistan‚ even though cellular phones or commonly known as mobile phones have been around since the late 1980s‚ they became very popular in the late 1990s when they turned to be more affordable and cost-effective to the common people
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ADVANTAGES AND DISADVANTAGES OF MOBILE PHONES ADVANTAGES AND DISADVANTAGES OF MOBILE PHONES Mobile phones are used all over the world for different purposes. In this essay‚ we will be looking at the advantages and disadvantages of using mobile phones. Dr Martin Cooper is considered the inventor of the first portable handset and the first person to make a call on a portable cell phone‚ in April 1973. This portable phone had numerous features never seen before. It revolutionised communication
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Advantages and disadvantages of Cell Phones It is for a fact that having a mobile phone now a days is a sort of a necessity and it is an inevitable truth that mobile industry is taking everyone by a storm. From the very basic thing of making a call to texting‚ and now internet access for just a touch of your finger tips. There are millions of mobile phone users. The mobile phone usage is beneficial and at the same time the usage can also be useless and have certain disadvantages. Advantages
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References: 1) RaulBarrera. (2012). Disadvantages of Cell Phones in School. Available: http://www.studymode.com/essays/Disadvantages-Of-Cell-Phones-In-School-1074638.html. Last accessed 6 May 2014. 2) HayItsGio. (2012). Cell Phones in School. Available: http://www.studymode.com/essays/Cell-Phones-In-School-1317488.html. Last accessed 4 May 2014.
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Cells of the body are organized into four fundamental tissues; epithelial‚ connective‚ muscle and nerve. Epithelial tissues line all surfaces of the body: the skin‚ cavities‚ ducts‚ vessels. They are named according to the cell shape on the free surface. Cells of a tissue are held together by the basement membrane and intercellular fibbers. These tissues receive their nutrition by diffusion‚ for they are without blood vessels. Simple squamous epithelium lines all blood and lymphatic vessel‚ including
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A fuel cell is a device that transfers the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen or another oxidizing agent [1]. Fuel cells can produce electricity continuously until these inputs are supplied. The first fuel cells were invented in 1838. Since then‚ fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for industrial‚ commercial and residential buildings and in inaccessible
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QUILONA‚ KLARISSE JANE A. BSP-1B Animal Tissues 1. Epithelial Epithelial tissue is made of closely-packed cells arranged in flat sheets. Epithelia form the surface of the skin‚ line the various cavities and tubes of the body‚ and cover the internal organs. Subsets of Epithelia Epithelia that form the interface between the internal and external environments. Skin as well as the lining of the mouth and nasal cavity. These are derived from ectoderm. Inner lining of the GI tract‚ lungs‚ urinary
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